Robot skin

Robot skin is the outer covering of a robot: the layer, or set of layers, applied to the outside of a machine for appearance, protection, safety, hygiene, and, increasingly, touch sensing. The term spans two quite different technologies that are easy to confuse. The first is sensing skin, also called electronic skin or e-skin: flexible arrays of sensors that give a robot something like a biological sense of touch. AI Wiki treats that separately under electronic skin and tactile sensing, and this article covers it only briefly. The second, and the focus here, is covering skin: the aesthetic and protective outer finish that makes a robot look complete, keeps its mechanism clean and safe, and softens contact with the people around it.

Covering skin itself divides into two broad families. One is silicone and elastomer cosmesis, the lifelike face and hand coverings used on hyper-realistic androids and on prosthetic limbs. The other is textile and knitted apparel, the "robot clothing" layer of fabrics, meshes, and foam-backed covers that a growing number of makers wrap around their machines. Both stand in contrast to the older default: a hard molded shell of plastic or metal. As humanoid robots move out of laboratories toward factories, shops, care settings, and homes across 2025 and 2026, covering skin has grown from an afterthought into a small but visible supplier niche, with apparel manufacturers, silicone compounders, and specialist knitting studios all positioning to dress the coming fleets ^[26][27].

Two meanings of "robot skin"

Because the same phrase is used for both, it helps to fix the distinction before going further. Sensing skin is an input device. It embeds many small sensing elements (often called taxels, a tactile analog of pixels) across a bendable surface so the robot can register where and how hard it is being touched, and sometimes temperature, vibration, or an approaching hand. That is a hard, still largely experimental engineering problem, and it is documented in full on the electronic skin and tactile sensing pages.

Covering skin, by contrast, is mostly a passive layer. It does not have to detect anything; it has to look right, feel safe, stay clean, and survive. The two are not mutually exclusive. Some coverings are engineered to sit over sensor arrays without blinding them, and at least one research line, knitted skins that are themselves woven from conductive yarn, deliberately merges the two. But the commercial activity that has drawn attention in 2026, from washable robot clothing to platinum-silicone faces, is overwhelmingly about the covering, not the sensing. This article is about the covering.

Why robots have skins

A bare robot is an exposed mechanism: wiring looms, actuators, belts, and circuit boards, with sharp edges and moving joints. Putting a skin on it serves several distinct purposes at once, and different purposes call for different kinds of skin.

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The safety functions are the ones humanoid makers now emphasize most, because a robot that shares space with people has to fail gently. Soft outer layers and multi-density foam reduce the force of an accidental bump, cover pinch points at the joints, and make an approaching machine read as less threatening. The hygiene and thermal functions matter most for robots meant to work long shifts in messy or regulated environments, which is why removable, washable, and breathable covers keep recurring in the designs described below.

Types of robot skin

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The rigid shell is the incumbent. Most working humanoids, including Tesla Optimus, Boston Dynamics' Atlas, Apptronik's Apollo, and Unitree's G1, are finished in molded polymer or metal panels, sometimes with foam in high-contact zones. A hard shell is cheap, stiff, and protective, and it is not usually called "skin" at all. The shift that this article tracks is the move, on a subset of robots, away from that hard shell toward soft coverings: silicone where the goal is to look human, and textile where the goal is to be safe, washable, and unintimidating.

Silicone and elastomer cosmesis

For robots that are meant to look like people, the covering of choice is silicone. The face, and sometimes the hands and body, are cast in a soft, skin-toned elastomer stretched over a mechanism that pulls it into expressions. The de facto standard materials, especially for academic and early-commercial work, are platinum-cure (addition-cure) silicone rubbers, prized because they cure without shrinkage, come in very soft grades, and can be pigmented and layered to mimic flesh.

The best-known product families come from the special-effects supplier Smooth-On. Its Dragon Skin line is a room-temperature-vulcanizing platinum-cure silicone available in Shore hardnesses from roughly A10 to A30, strong and stretchy enough to flex repeatedly without tearing ^[12]. Its Ecoflex line is softer still, in the very low "00" hardness range, and is marketed as feeling and behaving like human skin; skin-effects artists used Ecoflex to build wounds and scars for television productions such as CSI and Dexter, an indication of how convincing the material can be ^[13]. Academic robot-face work leans on the same materials: one 2024 study on fabricating artificial skin for a robotic head reported that a roughly one-to-one blend of Ecoflex 00-30 and Dragon Skin 10 gave the best combination of realism and durability under pressure, tearing, and puncture ^[14].

Some makers use proprietary elastomers rather than off-the-shelf silicone. Hanson Robotics, the maker of the android Sophia, developed a patented material it calls Frubber (a contraction of "flesh rubber"), an elastomer engineered to mimic the texture and flexibility of human skin and, crucially, to form expressions under low actuation force, so that small motors beneath the surface can crease and move it like real facial tissue. Hanson has used Frubber on Sophia and on earlier robots including an Albert Einstein head and the character robot BINA48 ^[20]. The British firm Engineered Arts takes a comparable approach: its Mesmer robots are covered in a skin-like silicone rubber cast from three-dimensional scans of real human models, so the surface reproduces genuine bone form and skin texture ^[21]. The same company's widely demonstrated Ameca deliberately wears a gray, non-human-toned silicone, a design choice that sidesteps the uncanny valley by not attempting photorealism at all.

The most active current wave of silicone cosmesis comes from Chinese makers of hyper-realistic heads and androids, and it is what ties the "skin" business directly to the humanoid boom. Noetix Robotics of Beijing builds a bionic head line called Hobbs whose facial skin is specially formulated platinum silicone; the company markets its realism as "wax-figure level" and cites a very high facial degrees-of-freedom count, around 54, so the surface can produce subtle expressions ^[16][17]. The Shanghai startup AheadForm, founded in 2024 by the Columbia University roboticist Yuhang Hu, builds head-and-bust units under the Origin and Elf names whose product materials describe a multi-layer silicone or elastomer skin over a compliant substructure, moved by dense arrays of quiet brushless micro-motors; for one Elf model the company has claimed skin geometry accurate to within half a millimeter ^[15]. The consumer android UWORLD U1, from UBTECH, is finished in lifelike silicone skin with realistic hair and an expressive face, and UBTECH's earlier hyper-realistic prototype, Una, was likewise built with soft silicone and composite materials ^[22]. In November 2025, XPeng unveiled a second-generation Iron humanoid with what it described as a soft, full-body synthetic skin over a bionic "bone, muscle, skin" structure; after the robot's fluid catwalk gait prompted online claims that a person in a costume was inside, the company released footage of the machine being cut open to show the mechanism underneath ^[18][19][28].

Silicone cosmesis also has a long history in prosthetics, which is where much of the craft originated. Cosmetic silicone gloves and covers, individually pigmented to match a wearer's skin, are routinely fitted over mechanical bionic hand mechanisms for a natural appearance; makers of advanced prosthetic and robotic hands including Open Bionics, PSYONIC, Covvi, and BrainCo offer or support such covers. The same materials and techniques carry over into humanoid hands, where a soft silicone glove both improves grip and hides the linkage underneath. Companion-android makers such as Realbotix, which builds hyper-realistic social robots, sit at the far end of this spectrum, casting full silicone faces and bodies for maximum realism.

Textile and knitted skins

The newer and less mature family of covering skin is textile: fabric, knitwear, and mesh wrapped around a robot as clothing or as a permanent soft outer layer. This is the layer the seed for this article pointed to, and its most credible large-scale example comes from a major humanoid maker rather than a startup.

Figure AI's Figure 03, introduced in October 2025, is covered in soft textiles rather than hard machined parts, with strategically placed multi-density foam to cushion contact and protect against pinch points. Figure describes the soft goods as fully washable and removable or replaceable without tools, and says commercial customers can design their own uniforms for a fleet, including versions in more durable or cut-resistant materials for industrial work ^[1]. Press coverage likened the look to a knit sweater, and Figure said the redesign, soft goods included, helped make the robot roughly nine percent lighter than its predecessor ^[2][3]. Figure credits its in-house engineering and design teams for the covering; the design clearly borrows the vocabulary of apparel rather than of machine housings.

The technical idea behind purpose-made robot textiles is seamless, or whole-garment, knitting: a computer-controlled industrial knitting machine produces a single three-dimensional tube of fabric with no cut-and-sew seams, so it can be shaped to fit a limb or torso and stretch across a moving joint without binding. The early-stage studio KNITREAL, whose only verifiable public presence is an Instagram account, @knitreal_studio, markets exactly this under the name Soft Skin (also styled RoboSkin): a bespoke, custom-fit covering that uses "3D-knit mapping for precise, seamless coverage of complex surfaces," with "stretch-fit joints, breathable mesh," and a soft matte finish ^[25]. KNITREAL should be read as one small, thinly documented example of an emerging niche rather than an established supplier; beyond its social-media posts and the July 2026 X post that publicized it, little independent information about the studio exists ^[25][26]. It is mentioned here because it illustrates the category, not because it is the category's leader.

Academic work gives the idea a longer pedigree, and it is where knitted skin blurs into sensing skin. In 2023, a team at Carnegie Mellon University's Robotics Institute presented RobotSweater, a machine-knitted tactile skin that a robot can wear like a sweater. Its fabric layers two sheets of conductive metallic yarn around a netlike, lace-patterned insulating layer; pressing the fabric closes a circuit between the conductive layers, so the covering registers touch and can be knitted to fit uneven three-dimensional surfaces on a standard programmable industrial knitting machine. The researchers showed it covering a robot arm and a mobile robot to detect collisions and to let a person guide the machine by touch, and published the work at the International Conference on Robotics and Automation (ICRA) ^[8][9]. At MIT, separate research explored robotic and autonomous knitting of soft wearables: a CSAIL pipeline called PneuAct used autonomous machine knitting to fabricate soft pneumatic actuators and assistive garments incorporating conductive sensing yarn ^[10], while the Self-Assembly Lab's 4D Knit Dress paired heat-activated yarns with a six-axis robot arm to sculpt a garment's shape without sewing ^[11]. These projects are not robot skins in the cosmetic sense, but they establish the manufacturing base, programmable industrial knitting of fitted, stretchable, sometimes sensor-bearing fabric, on which a robot-textile industry would be built.

The emerging supplier industry

The claim animating the 2026 conversation is not really about any single company; it is that the humanoid supply chain is beginning to resemble the automotive one, with specialized suppliers for chassis, actuators, sensors, hands, and now skins and garments. That framing comes largely from industry commentary rather than formal analysis: the X posts that seeded this topic argued that "the humanoid supply chain is starting to look like the automotive industry" and that a "new industry is emerging alongside China's humanoid robot boom" for robotic clothing and flexible outer skins ^[26][27]. Fashion-press commentary has floated the same idea, framing the dressing of humanoids as a prospective new growth market for apparel brands ^[29]. Those are observations, not established facts, and are presented here as such.

There is, however, real corporate activity behind the framing. The clearest single event was in South Korea. On June 8, 2026, Hansae, one of the world's largest contract apparel manufacturers (it produces garments for global brands including Gap, Target, Walmart, and Carhartt), held a press event billed as "Wear the Future" at the Textile Center in the Gangnam district of Seoul, presenting what it described as Korea's first exhibition of clothing designed for humanoid robots ^[4][5]. The concepts shown split into companion robots dressed in soft, cozy knitwear and industrial robots in functional uniforms, with fabrics chosen for cooling and ventilation to manage heat during long operation, for abrasion resistance and shape recovery, and for maintenance access to sensors, batteries, and motors without impeding joint movement ^[4][5][6]. Hansae's vice chairman Kim Ik-hwan framed the move as a natural extension of the company's functional-apparel expertise rather than a wholly new business, and its research head, Shon Ji-yeon, argued that robot clothing, like human clothing, will come to signal a machine's role and workplace ^[5][6]. Trade press including WWD's Sourcing Journal and technical-textile outlets covered the exhibition; one such write-up circulated under a garbled company name, but the underlying event, executives, and venue are the Hansae one ^[4][7].

On the materials side, the demand story is about silicone and elastomer rather than fabric. Market researchers have begun tracking humanoid-robot materials as a distinct category: IDTechEx publishes a dedicated "Materials for Humanoid Robots 2026 to 2036" report covering, among other things, synthetic skins and soft coverings ^[23]. Silicone itself is a large existing market that robot skins would feed into rather than create: Technavio projected the broader silicone elastomers market to grow by about 3.86 billion US dollars between 2026 and 2030, a compound annual growth rate near 6.3 percent, driven by many industries of which robotics is only one ^[24]. The honest reading is that humanoid skin is, as of mid-2026, a promising but small and unquantified slice of that demand, most visible in trade commentary and supplier positioning rather than in audited revenue. Where specific market sizes are cited, they belong to the whole silicone or apparel markets, not to robot skin alone, and should not be mistaken for the latter.

Design and engineering challenges

Covering skin looks simple and is not. A skin that has to move with a robot for years runs into constraints that a static prop never faces.

Conforming to motion. A covering must stretch across joints (a shoulder, an elbow, a neck) through their full range without bunching, tearing, or restricting the actuator. This is why seamless knitting and low-hardness silicone are favored: both accommodate large, repeated strain. It is also why a rigid shell, which cannot stretch, has to be broken into separate panels with gaps, exactly the gaps that create pinch points.

Durability over millions of cycles. A humanoid joint may flex tens of millions of times over a working life. Silicone can fatigue and tear at high-strain creases; knitted fabric can pill, stretch out, or wear through at contact points. A cosmetic layer that looks perfect on day one but splits after a month of use is a failure, so materials must be chosen for fatigue life, not just initial appearance.

Cleanability without damage. Removable, washable covers are a selling point for care and food settings, but repeated laundering or chemical wipe-down degrades many materials and can lift pigment from silicone. Designing covers that survive cleaning, and that come off and go back on without tools, is a real constraint, and one that Figure and Hansae both foreground ^[1][5].

Not impeding sensors or motion. A skin sits between the robot and the world, which means it sits on top of cameras, microphones, and any tactile sensing arrays. It must be thin, compliant, or perforated enough not to blind them, and light enough not to add meaningful inertia to a limb. Every gram of covering on a fast-moving arm costs actuator torque and battery life.

Cost and manufacturability. Casting a photorealistic silicone face by hand is slow and expensive, which suits a low-volume premium android but not a mass-produced worker. Knitting, by contrast, is attractive precisely because industrial knitting machines already make fitted three-dimensional garments cheaply and at scale ^[8]. The materials that win at volume will be the ones that a commodity manufacturing process can already produce.

Relationship to electronic skin and tactile sensing

Covering skin and sensing skin are different technologies with the same name, and the boundary between them is where much of the interesting engineering will happen. Today the two are mostly built and sold separately: electronic skin is a sensor system, documented on its own page along with the transduction methods, materials, and scaling bottlenecks that make it hard; a covering is a passive layer. Most shipping humanoids that sense touch at all concentrate that sensing in the hands, under a fingertip pad rather than across a body.

Three points of contact between the two are worth noting. First, a good covering must not defeat the sensors beneath it, so covering and sensing have to be co-designed on any robot that has both. Second, some coverings are engineered to carry sensing themselves: CMU's RobotSweater is literally a knitted garment that is also a pressure sensor, and XPeng's Iron covering has been described in Chinese-language coverage as a layered silicone composite with sensing properties, a claim discussed with appropriate caveats on the electronic skin page ^[8]. Third, both fields draw on the same soft-materials science: the stretchable silicones and elastomers used for a cosmetic face are cousins of the dielectrics and substrates used for capacitive e-skin. For readers who want the sensing side in depth, the electronic skin and tactile sensing articles are the right destinations; this page stays with the covering.

Notable examples

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Outlook

Covering skin is following the same trajectory as the rest of the humanoid stack: from one-off craft toward a supplier industry. In the near term the two families will keep diverging by purpose. Silicone cosmesis will stay concentrated in social, service, and companion robots, and in prosthetics, where looking human is the whole point and low volumes justify hand-finishing; the Chinese head makers are pushing its realism and its price down at the same time. Textile covering will spread fastest on working humanoids, where washability, safety padding, thermal management, and a non-threatening look matter more than a human face; Figure's washable soft goods and Hansae's functional apparel point the way ^[1][5]. Whether a genuinely large, standalone "robot skin" industry emerges, as the 2026 commentary predicts, depends on humanoids actually shipping in the volumes their makers project. Until then the honest description is a nascent niche: real activity from serious apparel manufacturers and silicone suppliers, attached to a robot market that is still mostly a forecast ^[23][24][26].

ELI5

Robots do not really need clothes, so why give them skin? Two reasons, and they are different. One kind of robot skin is like fake human skin: soft rubbery silicone stretched over a robot's face and hands so it looks like a person and can smile or blink. Companies in China, and older ones in the United States and Britain, are very good at this now, and some of their robot faces look so real they are a bit spooky. The other kind is more like actual clothes: soft, stretchy, washable fabric knitted to fit a robot's body. It makes the robot safer to bump into, quieter, easier to keep clean, and friendlier to be around, and you can take it off and wash it like a sweater. One new robot from a company called Figure wears exactly this kind of washable fabric instead of a hard plastic shell. A few clothing factories and knitting studios have started making outfits just for robots, betting that when lots of robots start living and working around people, someone will have to dress them.

See also

• Electronic skin
• Tactile sensing
• Humanoid robot
• Uncanny valley
• Figure 03
• Noetix Robotics
• Bionic hand
• Humanoid robot market

References

1. Figure AI. "Introducing Figure 03." figure.ai, October 2025. https://www.figure.ai/news/introducing-figure-03 ↩
2. urdesignmag. "Figure 03: The AI Humanoid Robot Redefining Design & Work." 2025. https://www.urdesignmag.com/figure-03-ai-humanoid-robot-design/ ↩
3. 36Kr. "Figure 03's Stunning Debut: Plans to Produce 100,000 Units in Four Years." eu.36kr.com, 2025. https://eu.36kr.com/en/p/3503156342725763 ↩
4. WWD / Sourcing Journal. "Humanoid Robots Are Fashion's Future Clients. Hansae Is Getting Ready to Dress Them." June 2026. https://wwd.com/sourcing-journal/industry-news/hansae-wear-the-future-robot-apparel-1239050469/ ↩
5. The Korea Times. "Clothing humanoid robots new mission for Hansae." June 13, 2026. https://www.koreatimes.co.kr/business/tech-science/20260613/clothing-humanoid-robots-new-mission-for-hansae ↩
6. The Asia Business Daily (asiae.co.kr). "Humanoids Dressed in Human Clothes: Hansae Co. Pioneers the Future Apparel Market." June 8, 2026. https://www.asiae.co.kr/en/article/2026060813551321532 ↩
7. Technical Textiles Today (technicaltextiles.in). "Humanoid Robot Clothing: A New Frontier in AI Fashion" (coverage of the Hansae "Wear the Future" exhibition). 2026. https://www.technicaltextiles.in/hanes-industries-launches-humanoid-robot-clothing-opening-a-new-frontier-in-ai-fashion/ ↩
8. Carnegie Mellon University. "Sweater-Wrapped Robots Can Feel and React to Human Touch." CMU News, May 2023. https://www.cmu.edu/news/stories/archives/2023/may/sweater-wrapped-robots-can-feel-and-react-to-human-touch ↩
9. Si, Z., Yu, T. C., Morozov, K., McCann, J., Yuan, W. "RobotSweater: Scalable, Generalizable, and Customizable Machine-knitted Tactile Skins for Robots." ICRA 2023, Carnegie Mellon Robotics Institute. https://www.ri.cmu.edu/publications/robotsweater-scalable-generalizable-and-customizable-machine-knitted-tactile-skins-for-robots ↩
10. MIT News. "Soft assistive robotic wearables get a boost from rapid design tool" (PneuAct, CSAIL). May 3, 2022. https://news.mit.edu/2022/soft-assistive-robotic-wearables-get-boost-rapid-design-tool-0503 ↩
11. designboom. "MIT's 4D knit dress and robot arm make custom clothing." March 11, 2024. https://www.designboom.com/technology/mit-4d-knit-dress-robot-arm-computerized-knitting-heat-activated-yarns-03-11-2024/ ↩
12. Smooth-On, Inc. "Dragon Skin Series, High Performance Silicone Rubber." https://www.smooth-on.com/product-line/dragon-skin/ ↩
13. Smooth-On, Inc. "Ecoflex 00-30 Super-Soft, Addition-Cure Silicone Rubber." https://www.smooth-on.com/products/ecoflex-00-30/ ↩
14. International Journal of Mechanical Engineering and Robotics Research. "Fabrication of Artificial Skin for Robotic Head Based on Silicone Rubber." Vol. 13, No. 2, 2024. https://www.ijmerr.com/2024/IJMERR-V13N2-213.pdf ↩
15. Interesting Engineering. "China's humanoid robot head shocks with 'lifelike facial expressions'" (AheadForm). 2025. https://interestingengineering.com/innovation/china-humanoid-robot-face-lifelike-expressions ↩
16. Interesting Engineering. "Noetix unveils humanoid robot receptionist with lifelike face." 2025. https://interestingengineering.com/ai-robotics/noetix-unveils-humanoid-receptionist-lifelike-face ↩
17. Noetix Robotics (Beijing) Technology Co., Ltd. "Hobbs W1." https://noetixrobotics.com/en/hobbs-w1 ↩
18. TechNode. "XPeng unveils new IRON humanoid robot with full-solid-state battery and AI brain." November 5, 2025. https://technode.com/2025/11/05/xpeng-unveils-new-iron-humanoid-robot-with-full-solid-state-battery-and-ai-brain/ ↩
19. New Atlas. "Xpeng cuts open its humanoid robot to prove it's real." 2025. https://newatlas.com/ai-humanoids/watch-iron-humanoid/ ↩
20. Wikipedia. "Hanson Robotics" (Frubber skin material; Sophia, Albert Einstein HUBO, BINA48). Accessed July 2026. https://en.wikipedia.org/wiki/Hanson_Robotics ↩
21. Wikipedia. "Engineered Arts" (Mesmer silicone skin cast from human scans; Ameca). Accessed July 2026. https://en.wikipedia.org/wiki/Engineered_Arts ↩
22. PR Newswire. "UBTECH Launches UWORLD U1, the World's First Full-Size Mass-Produced Ultra-Bionic Humanoid Robot." June 30, 2026. https://www.prnewswire.com/news-releases/ubtech-launches-uworld-u1-the-worlds-first-full-size-mass-produced-ultra-bionic-humanoid-robot-302815272.html ↩
23. IDTechEx. "Materials for Humanoid Robots 2026-2036: Technologies, Players, Forecasts." https://www.idtechex.com/en/research-report/materials-for-humanoid-robots/1160 ↩
24. Technavio. "Silicone Elastomers Market Growth Analysis, Size and Forecast 2026-2030." https://www.technavio.com/report/silicone-elastomers-market-industry-analysis ↩
25. KNITREAL (@knitreal_studio). "KNITREAL extends knit expertise to embodied intelligence" (Soft Skin / RoboSkin). Instagram, 2026. https://www.instagram.com/p/DWmMDLXEnal/ ↩
26. Eren Chen (@ErenChenAI). Post on the emergence of robotic clothing and flexible outer skins alongside China's humanoid boom. X, July 21, 2026. https://x.com/ErenChenAI/status/2079636507292479579 ↩
27. Irvin (@irvinxyz). Post likening the humanoid supply chain to the automotive industry, including suppliers of robot skins and garments. X, July 21, 2026. https://x.com/irvinxyz/status/2079712061102166203 ↩
28. BGR. "Xpeng Debuts Humanoid Robot With Synthetic Skin, Custom Body, And 2026 Release Date." 2025. https://www.bgr.com/2018475/xpeng-iron-humanoid-robot-synthetic-skin-2026-release-date/ ↩
29. Thought Catalog. "Fashion Brands Are About to Discover Their Next Growth Market: Dressing Humanoid Robots." May 2026. https://thoughtcatalog.com/chris-lavergne/2026/05/fashion-brands-are-about-to-discover-their-next-growth-market-dressing-humanoid-robots/ ↩