Kneeling Comfort is an anti-fatigue kneeling mat designed to alleviate the pain associated with kneeling for long periods or kneeling on hard surfaces. Comfortable - Reduces knee trauma and lower back stress Clean - Closed-cell nitrile-blended rubber foam will not absorb liquids, and the 100% nitrile rubber surface easily wipes clean with soap and water Safe - Certified high-traction by the National Floor Safety Institute (NFSI) Durable - Welding safe; chemical resistant; surface is grease/oil proof, cushion is grease/oil resistant Versatile - When you need a welding safe, chemical resistant, grease/oil proof surface, but the rubber side up; when you need additional traction on a slippery surface, put the rubber side down (foam side up) for added slip-resistance Convenient - Built-in handle enables easy transportation and storage Rubber surface has an ESD rating of electrically conductive