Rectangular Capsule Shapes Illustrations & Vectors

Abstract Seamless Vector Pattern Design with Rectangular Capsule Shapes in Neutral Color Tones. Generated by AI

Ten rectangular opaque gel shapes in blue and green tones on blue capsule. A grid of ten rectangular, opaque gel shapes in various shades of blue, green, purple. A grid of ten rectangular, opaque gel shapes in various shades of blue, green, purple, and white are presented on a light

Abstract Geometric Shapes: Four-Leaf Clover and Capsule Icons. A clean, minimalist graphic featuring three distinct black outline abstract shapes on a white. A clean, minimalist graphic featuring three distinct black outline abstract shapes on a white background. On the left and right are identical four-leaf clover-like designs, each with a central circle connected by lines to four rounded rectangular segments. In the center is a vertical capsule shape, a rounded rectangle with a central circle. These icons are ideal for representing concepts like connection, ideas, data, or abstract elements in design and technology.

Rectangular Rug with Mid- Century Modern Geometric Pattern on White Background carpet. A rectangular rug with a distinctive mid-century modern geometric pattern. A rectangular rug with a distinctive mid-century modern geometric pattern is displayed on a plain white background. The pattern consists of repeating oval or capsule shapes in various muted colors including beige, brown, blue, yellow, and green, arranged in a staggered grid. The textured surface of the rug is visible

Set of 3D red buttons in square, round, and rectangular shapes with shadows for UI design, web elements, and interactive apps. A series of six red 3D geometric. A series of six red 3D geometric shapes against a transparent background. The shapes include a thin rectangle, a square, an elongated oval, a circle, a narrow capsule, and a square with rounded corners. Each shape appears to have a glossy finish, casting subtle shadows to suggest depth and dimension. The arrangement showcases diversity in form while maintaining a consistent color and style, suitable for visual design exploration or educational purposes on shapes and volumes.

Three different shapes of yellow gel capsules displayed on a white background. The image shows three yellow gel capsules in varying shapes: a rectangular capsule. The image shows three yellow gel capsules in varying shapes: a rectangular capsule, an oval capsule, and a square capsule. These capsules are typically used in pharmaceuticals for oral medication delivery and may contain different types of drugs or supplements inside each shape

Teal web buttons set isolated on transparent background. Vector glossy 3D UI menu banners with capsule, rounded corner and. Rectangular shapes for digital. Teal web buttons set isolated on transparent background. Vector glossy 3D UI menu banners with capsule, rounded corner and rectangular shapes for digital application interface navigation.

Intersecting rounded rectangular shapes in orange, green, and yellow. A minimalist composition featuring three overlapping rounded rectangular shapes. The shapes. A minimalist composition featuring three overlapping rounded rectangular shapes. The shapes are colored in vibrant orange, deep green, and warm yellow. Where the shapes intersect, the overlapping areas create darker, semi-transparent zones in dark gray and muted tones, adding depth and a sense of layering. The arrangement is symmetrical and balanced, utilizing clean, smooth curves and flat color

Intersecting rounded rectangular shapes in orange, green, and yellow. A minimalist composition featuring three overlapping rounded rectangular shapes. The forms. A minimalist composition featuring three overlapping rounded rectangular shapes. The forms are colored in solid orange, dark green, and yellow. Where the shapes intersect, the overlapping areas create darker, semi-transparent tones, resulting in a layered visual effect. The arrangement is balanced and symmetrical, set against a plain white background. The style is flat and clean, emphasizing the

Blue web buttons set isolated on transparent background. Vector glossy blue 3D UI elements collection with rounded rectangular and. Capsule shapes for digital. Blue web buttons set isolated on transparent background. Vector glossy blue 3D UI elements collection with rounded rectangular and capsule shapes for digital interface website menu navigation.

Red web buttons set isolated on transparent background. Vector glossy 3D UI elements collection with rounded rectangular, circle. And capsule shapes for digital. Red web buttons set isolated on transparent background. Vector glossy 3D UI elements collection with rounded rectangular, circle and capsule shapes for digital interface menu navigation.

Set of Abstract Geometric Frames with Organic Shapes. A collection of three distinct decorative frames featuring a modern, abstract aesthetic. Each frame is. A collection of three distinct decorative frames featuring a modern, abstract aesthetic. Each frame is constructed from a series of interconnected, rounded, capsule-like shapes in a vibrant color palette of teal and coral orange. These frames offer a playful, contemporary look suitable for graphic design projects, social media templates, photo borders, or creative invitations. The clean lines and bold colors provide a versatile visual element that can be easily integrated into various digital and print media designs, adding a touch of geometric flair and artistic structure to any composition.

Four blank metal keychains with different shapes on a white background key ring silver. A collection of four blank metal keychains is displayed against a clean. A collection of four blank metal keychains is displayed against a clean white background. The keychains feature a variety of shapes: a round disc, a rectangular tag, a cylindrical capsule, and a round disc with a black insert. They are all attached to silver key rings

Four different metal keychains with blank circular and rectangular tags on a white background. A set of four distinct metal keychains is arranged on a clean. A set of four distinct metal keychains is arranged on a clean white background. From left to right, the keychains feature a circular blank tag, a rectangular blank tag, a cylindrical capsule-shaped tag, and another circular blank tag with a black insert. All keychains have silver-colored key rings and metal components, with a polished or brushed finish. The blank tags offer ample space for

Set of black rounded rectangular frames isolated on a transparent background. A collection of simple black rounded rectangular frames of different sizes. These. A collection of simple black rounded rectangular frames of different sizes. These clean outline shapes are perfect for design projects and are isolated on a transparent background

Six colorful cartoon characters with geometric shapes and expressive faces. Top row: a round pink and green character with eyes and mouth, waving a blue round

Close-up blister pack containing twelve capsules rectangular shape has white textured surface different sizes. Of a blister pack containing twelve capsules. The. Of a blister pack containing twelve capsules. The blister pack is rectangular in shape and has a white, textured surface. The capsules are of different sizes and shapes, with some being round and others being

Minimalist geometric composition with abstract shapes on violet background. This composition features diverse geometric elements arranged on vibrant lavender. This composition features diverse geometric elements arranged on vibrant lavender backdrop. Solid triangle rests near elongated rounded capsule while distinct rectangular block balances layout. Intricate thin lines form starburst pattern beside circular ring shape. Minimalist aesthetics define modern artistic arrangement using varying purple hues for striking visual interest throughout surface

Dynamic rounded rectangular shapes in blues and pinks moving across a vibrant gradient backdrop. Vibrant gradient backdrop adorned with numerous diagonal rounded. Vibrant gradient backdrop adorned with numerous diagonal rounded capsule shapes in shades of blue, pink, and purple, creating depth

Geometric shapes and vibrant colors on a pristine surface. The image displays a collection of geometric shapes including a blue rectangular bar with three red. The image displays a collection of geometric shapes including a blue rectangular bar with three red circular dots, a red elongated capsule, a red triangle, and a blue torus (ring). These shapes are placed on a clean, white, slightly textured background, creating a minimalist and visually appealing composition

Blank Sticker and Label Templates on Kraft Paper. A top-down view showcasing three sheets of blank, light brown paper, each featuring a variety of outlined. A top-down view showcasing three sheets of blank, light brown paper, each featuring a variety of outlined shapes. The sheets include circular, rectangular, and decorative label designs, resembling ready-to-peel stickers or die-cut templates. This versatile collection is ideal for crafting, organizing, branding, or product labeling projects. The neutral background emphasizes the clean lines and customizable nature of the blank labels, perfect for mockups, DIY projects, or design inspiration.

Modern Geometric Gradient Background with Diagonal Shapes. A vibrant and modern abstract background featuring a smooth color gradient from turquoise blue to deep. A vibrant and modern abstract background featuring a smooth color gradient from turquoise blue to deep purple. Diagonal, rounded rectangular shapes are scattered across the canvas, creating a sense of depth and movement with a subtle 3D or embossed effect. This minimalist and clean geometric design is perfect for various digital applications, including website landing pages, presentation slides, technology banners, corporate branding, and contemporary graphic design projects. The futuristic aesthetic makes it a versatile backdrop for tech-related themes.

Geometric Composition: Floating Cubes, Sphere, and Capsule in Lavender Hues. The image features an abstract composition of floating lavender cubes, a sphere, and. The image features an abstract composition of floating lavender cubes, a sphere, and a capsule shape. The arrangement creates an interesting visual with rounded and rectangular forms, giving a sense of digital artistry.

Purple 3D Credit Card with Dollar Sign and Abstract Shapes on White Background debit card. A 3D rendered purple credit card with a gold dollar sign is shown on a. A 3D rendered purple credit card with a gold dollar sign is shown on a white background. The card has three white rectangular elements representing card numbers or features, and a pink circular and pink rectangular element near the bottom left. Scattered around the card are abstract, rounded shapes in light blue and green

Cosmetic bottle icons set with beauty product containers silhouettes. Set of black silhouettes depicting various cosmetic bottle icons. Images include pump. Set of black silhouettes depicting various cosmetic bottle icons. Images include pump bottles, spray bottles, jars, tubes, and more in diverse shapes and sizes. Containers reflect common beauty product packaging designs such as circular, rectangular, and oval forms. These illustrations are simplified to highlight the outline and structural diversity of cosmetic containers. a i generated

Cyber monday zero percent financing promotional badge. The image depicts a promotional graphic for Cyber Monday featuring a purple rectangular badge with bold. The image depicts a promotional graphic for Cyber Monday featuring a purple rectangular badge with bold white text reading \'Cyber Monday\'. An orange circular badge with \'0%\' is placed in the top right corner, symbolizing zero percent financing or interest. The graphic is surrounded by scattered purple capsule shapes resembling pills or capsules, adding a playful and modern touch to the design

This fresh and contemporary flat vector illustration presents a stylized single human figure. Contained within a bold circular ring frame, rendered entirely in. This fresh and contemporary flat vector illustration presents a stylized single human figure contained within a bold circular ring frame, rendered entirely in a distinctive yellow-green lime color against a clean white background, combining the universally familiar circular profile frame format with a refined and modern person icon composition that feels equally at home within cutting-edge digital product design systems and traditional graphic communication contexts. The outer circular ring is rendered as a thick, consistently weighted stroke that creates a strong and self-contained boundary around the entire composition, immediately evoking the profile picture frame conventions established across the world's most widely used social media platforms, messaging applications, professional networking services, and digital communication tools, making the overall icon format instantly recognizable and contextually intuitive to global digital audiences without requiring any additional explanatory context. The ring border maintains a generous and well-proportioned thickness relative to the overall diameter of the composition, providing sufficient visual weight to anchor the icon as a standalone graphic element while leaving ample white interior space within the circle to comfortably accommodate the figure elements without any sense of visual crowding or compositional tension. Within the white interior of the circular frame, the single person figure is composed of two primary geometric elements rendered in the same consistent yellow-green tone as the outer ring: a solid filled circle in the upper central area representing the head of the figure, and a broad, fully rounded rectangular or capsule-shaped solid form in the lower central area representing the shoulders and upper body of the individual. The head circle is proportioned at a comfortable size that reads clearly and distinctly as a head element within the overall composition, positioned with appropriate vertical spacing above the body shape and with the white negative space of the neck gap between the two elements creating a natural and anatomically intuitive separation that is characteristic of high-quality minimalist person icon design. The body shape beneath the head is the most visually distinctive element of this particular icon design, featuring a fully rounded rectangular form with generous corner radii on all four corners that give the body element a soft, organic, capsule-like or tablet-like quality that is considerably more refined and contemporary than the standard hard-edged semicircular body shapes seen in more conventional person icon designs. This fully rounded body treatment creates a visual harmony with the circular head element above and the circular ring frame surrounding the entire composition, establishing a cohesive circular and curved design language throughout the entire illustration that feels coherent, intentional, and carefully crafted. The body shape also features a subtle asymmetry in its vertical positioning, sitting closer to the bottom interior edge of the circular frame, which allows the body element to interact naturally with the lower arc of the circular border and creates a sense of the figure being grounded and contained within its circular environment rather than simply floating in empty space. The specific yellow-green lime tone chosen for this illustration is a bright, fresh, and distinctly contemporary color that sits at the lively intersection of yellow and green on the color spectrum, carrying a rich and versatile set of associations that make it suitable for a remarkably broad range of brand contexts and design applications. This particular hue is strongly associated with natural vitality, organic freshness, plant life, spring growth, environmental consciousness, and sustainable living, making it an excellent color choice for brands and organizations operating in the health food, organic produce, environmental advocacy, eco-friendly product, sustainability consulting, and green lifestyle sectors. Simultaneously, the same yellow-green tone projects qualities of youthful energy, digital innovation, creative freshness, technological optimism, and forward-thinking dynamism, making it equally appealing for technology startups, creative agencies, educational platforms, youth-oriented consumer brands, and digital product companies seeking a color identity that feels modern, energetic, and distinctly different from the more conventional blues, grays, and dark greens that dominate the corporate digital design landscape. The complete absence of any facial features, hair styling, clothing details, accessories, or other individuating visual elements ensures that this icon maintains absolute gender neutrality, age neutrality, racial neutrality, and cultural inclusivity, making it universally applicable as a human representation symbol across all demographic groups and global markets without any risk of inadvertent exclusion or misrepresentation. The circular frame format of the overall composition makes this icon particularly well-suited for use in contexts where it will be displayed within circular containers, circular crop masks, or circular badge formats, as the outer ring element provides a pre-defined circular boundary that eliminates the need for any additional cropping, masking, or container formatting by the end user. This illustration is ideally suited for commercial use across an exceptionally broad spec

Abstract Geometric Background in Pastel Colors with Copy Space, cyber monday, cyber monday shoping, black friday. Abstract background featuring a dark navy. Abstract background featuring a dark navy canvas with colorful geometric gradient shapes diagonally arranged on the right. Shapes include circles, rectangles, and lines with gradients of yellow, blue, and pink. A white rectangular outline sits on the left, providing balance to the composition. The use of bright gradients against the dark background creates a striking contrast, enhancing the visual appeal.

Tablet capsule logo icon. A stylized, black brushstroke design depicting a rectangular frame with rounded corners, divided in half by a vertical line. Inside. A stylized, black brushstroke design depicting a rectangular frame with rounded corners, divided in half by a vertical line. Inside, six rows contain circular shapes resembling tablets or capsules, arranged in a 3x4 grid pattern. The artwork has an abstract and minimalist appeal, utilizing bold lines and irregular strokes against a white background, giving it a modern, artistic feel.

Arranged on a rectangular table with a light gray surface and gray. A pattern featuring colorful geometric shapes on a white background. The design includes. A pattern featuring colorful geometric shapes on a white background. The design includes circles and capsule-like forms in pastel hues of pink, green, blue, yellow, and purple. Shapes are uniformly distributed, creating a visually balanced and abstract composition. The capsules and circles overlap minimally, maintaining a clear distinction between each shape. The style is reminiscent of minimalist graphic design, commonly used for backgrounds or textiles.

Abstract composition on a light gray to white background, featuring a layered arrangement of translucent rounded rectangular and. A minimalist abstract. A minimalist abstract composition on a light gray to white background, featuring a layered arrangement of translucent rounded rectangular and capsule-shaped forms

Abstract composition on a light gray to white background, featuring a layered arrangement of translucent rounded rectangular and. A minimalist abstract. A minimalist abstract composition on a light gray to white background, featuring a layered arrangement of translucent rounded rectangular and capsule-shaped forms

Abstract composition on a light gray to white background, featuring a layered arrangement of translucent rounded rectangular and. A minimalist abstract. A minimalist abstract composition on a light gray to white background, featuring a layered arrangement of translucent rounded rectangular and capsule-shaped forms

Abstract composition on a light gray to white background, featuring a layered arrangement of translucent rounded rectangular and. A minimalist abstract. A minimalist abstract composition on a light gray to white background, featuring a layered arrangement of translucent rounded rectangular and capsule-shaped forms

Ai generated Black Conversation and Dialogue Icons. Collection of geometric speech bubble silhouettes featuring rounded, rectangular, capsule and asymmetric. Collection of geometric speech bubble silhouettes featuring rounded, rectangular, capsule and asymmetric dialogue shapes. Clean solid black elements isolated on a white background, suitable for communication graphics, social media designs, messaging interfaces, branding, advertising and modern graphic projects

Collection of Various Pill Organizers and Medicine Boxes. A diverse assortment of pill organizers, medicine boxes, and pill cases in different shapes and sizes. A diverse assortment of pill organizers, medicine boxes, and pill cases in different shapes and sizes, illustrating daily medication management

Liquid Medicine Bottle Icon with Cross and Pills. A clean, minimalist black and white line art icon representing a bottle of liquid medicine. The bottle has a. A clean, minimalist black and white line art icon representing a bottle of liquid medicine. The bottle has a cap with three horizontal lines, a rounded rectangular body, and features two horizontal oval shapes on the left, symbolizing pills or dosage, and a prominent red cross symbol within a circle on the right, indicating medical use. This versatile icon is perfect for healthcare, pharmaceutical, or wellness-related digital and print designs.

This vibrant and exceptionally well-composed flat vector illustration presents a stylized group of three people. Contained within a bold circular ring frame. This vibrant and exceptionally well-composed flat vector illustration presents a stylized group of three people contained within a bold circular ring frame, rendered entirely in a bright warm orange color against a pristine white background, combining two of the most universally recognizable design conventions in contemporary digital iconography — the circular avatar frame and the multi-person group figure — into a single cohesive, highly legible, and visually dynamic icon composition. The outer circular ring serves as a strong containing border that frames and contextualizes the group figure elements within it, creating an immediately recognizable badge-style or button-style format that is deeply familiar to global digital audiences from its widespread use across social media platforms, messaging applications, group chat interfaces, contact management systems, and community-oriented digital product designs. The ring stroke is rendered at a consistent and substantial thickness that provides strong visual weight and presence without overpowering the figure elements contained within the white interior space of the circle, striking an ideal balance between the containing frame and the group icon content it surrounds. Within the circular frame, the three-person group composition features a central figure prominently positioned in the foreground at the largest scale, flanked by two smaller figures partially visible on either side, creating the familiar layered depth arrangement that communicates group membership and social gathering with maximum economy of visual means. All three head elements are rendered as solid filled circles of proportionally appropriate sizes, with the central figure's head circle notably larger than the two side figures' heads, reinforcing the visual hierarchy and spatial depth reading of the composition. The body shapes beneath the heads are rendered using the same distinctive fully rounded rectangular or capsule-like form treatment seen in premium contemporary icon design systems, with every corner of each body element featuring a generous and consistent rounded radius that gives the figures an organic, approachable, and human-friendly quality that contrasts favorably with harder-edged semicircular body alternatives. The central figure's body shape is the largest and most prominent, occupying the foreground of the lower compositional area, while the two side figures' body shapes are partially visible behind and to either side of the central body, rendered at a smaller scale that reinforces the three-dimensional spatial layering of the group arrangement. The white negative space gaps between the individual figure elements within the composition are carefully calibrated to provide sufficient visual separation between each figure to allow them to be read as distinct individuals while simultaneously maintaining the overall unified group silhouette that makes the icon instantly recognizable as a representation of a collective rather than isolated individuals. The specific bright orange color used consistently throughout both the circular frame and all figure elements is a vivid, energetic, and psychologically powerful hue that projects qualities of enthusiasm, warmth, social energy, creativity, optimism, friendliness, and dynamic action, making it an ideal color choice for platforms and brand identities that prioritize human connection, community engagement, social interaction, and positive user experience. The circular framing device adds a contained, complete, and self-sufficient quality to the overall icon that makes it particularly suitable for use as a standalone badge, button, avatar, or icon element that needs to function independently within a larger design system without requiring additional surrou

This polished and highly distinctive flat vector illustration presents a stylized group of three people rendered. Entirely in a rich dark forest green color. This polished and highly distinctive flat vector illustration presents a stylized group of three people rendered entirely in a rich dark forest green color against a clean white background, featuring a notably unique and refined compositional approach that sets it apart from conventional people group icon designs through its use of fully rounded, pill-shaped body forms rather than the standard hard-edged semicircular shoulder shapes more commonly seen in this icon category. The design employs circular forms for all three head elements and broad, generously rounded rectangular body shapes with fully curved corners for the shoulder and upper torso representations, creating a softer, friendlier, and more organically human visual impression that feels warmer and more approachable than geometrically rigid alternatives. The central figure occupies the dominant foreground position in the composition, rendered at the largest scale of the three figures with a notably larger head circle and a wide, prominently sized rounded body shape that fills the lower central area of the illustration with substantial visual weight and presence. The two flanking figures on either side of the central form are rendered at a smaller scale, with their circular heads positioned at a lower vertical elevation than the central figure's head, creating a clear three-dimensional spatial arrangement that suggests the side figures are standing slightly further back from the viewer than the central figure, adding convincing depth and perspective to the otherwise flat geometric design. Each of the three body shapes features the same characteristic fully rounded corner treatment at all four corners of the rectangular form, giving the body elements an almost capsule-like or bean-like organic quality that harmonizes beautifully with the circular head shapes above and reinforces the overall sense of softness, approachability, and human warmth that permeates the entire composition. The white negative space gaps between the overlapping figures at both the head level and the body level are precisely managed to provide just enough visual separation to allow each individual figure to be read distinctly within the group context, while the overall silhouette of the three figures together reads as a cohesive, unified, and immediately recognizable group icon at even very small display sizes. The specific dark forest green tone chosen for this illustration is a deep, saturated, and authoritative shade that occupies the rich middle ground between hunter green and emerald, carrying a powerful and multifaceted set of cultural and psychological associations that make it one of the most semantically loaded and commercially versatile color choices available for this type of icon illustration. Forest green at this depth and saturation level is strongly associated with environmental responsibility, ecological sustainability, natural world connection, organic living, agricultural heritage, conservation efforts, and green energy initiatives, making this icon particularly compelling for organizations and brands operating within the environmental, sustainability, agriculture, forestry, conservation, and eco-tourism sectors. Simultaneously, the same dark green tone projects qualities of stability, trustworthiness, professional credibility, financial prudence, institutional authority, and long-term reliability, making it equally appropriate for corporate, financial, legal, educational, and governmental contexts where these values need to be visually communicated through design choices. The fully rounded body shapes add a layer of contemporary design sophistication that differentiates this illustration from more utilitarian icon designs, suggesting a higher level of design craft and visual refinement that will appeal to premium brand contexts and design-conscious buyers seeking assets that feel polished and intentional rather than generic. The faceless, featureless nature of all three figures ensures complete gender neutrality, cultural neutrality, and demographic inclusivity, making this group icon universally applicable across all audience types and geographic markets without risk of exclusion or misrepresentation. The composition is well-balanced and symmetrically organized around the central vertical axis, with the larger central figure providing a strong v

Black Conversation and Dialogue Icons. Collection of geometric speech bubble silhouettes featuring rounded, rectangular, capsule and asymmetric dialogue shapes. Collection of geometric speech bubble silhouettes featuring rounded, rectangular, capsule and asymmetric dialogue shapes. Clean solid black elements isolated on a white background, suitable for communication graphics, social media designs, messaging interfaces, branding, advertising and modern graphic projects

Dynamic Abstract Liquid Bubbles in Rounded Frame. A visually striking abstract image featuring a horizontal, rounded rectangular frame enclosing a vibrant. A visually striking abstract image featuring a horizontal, rounded rectangular frame enclosing a vibrant pattern of circular shapes. The composition showcases a smooth color gradient, transitioning from warm yellows, oranges, and reds on the left to deep blues on the right. These luminous, bubble-like elements, varying in size, create a dynamic sense of fluid movement and energy. Ideal for modern backgrounds, technology concepts, graphic design, or as a captivating visual element in presentations and digital media.

Colorful bottle illustration. Bottle of soap illustration. Flat bottle. Eight colorful flat illustrations of bottles, each with distinct shapes and colors. They. Eight colorful flat illustrations of bottles, each with distinct shapes and colors. They include green, yellow, purple, brown, and blue bottles, all featuring black caps. Some bottles have handles, and others display labels with simple rectangular designs. The varied designs suggest different purposes, such as for soap or detergent, represented in a minimalist, flat style against a white background.

Minimalist Black and White Geometric Abstract Shapes and Icon Design. This image was created using Generative AI. Clean monochrome vector-style graphic featuring. This image was created using Generative AI. Clean monochrome vector-style graphic featuring vertical bars and a stylized bottle icon. Modern abstract composition suitable for web design, logos, and user interface elements

Microphone icon on white background. A clean, high-contrast vector-style microphone icon is centered on a white background. The design uses black and white. A clean, high-contrast vector-style microphone icon is centered on a white background. The design uses black and white shapes with simple geometric lines: a rectangular mic body with a rounded top, a circular element on the front, and a long stand ending in a circular base. The minimal composition and bold silhouette make it suitable for illustrating audio recording, voice communication, broadcasting, customer support, and media production concepts in digital interfaces, presentations, or marketing materials.