Combination of a rubber top surface with a dense sponge backing utilizing the NoTrax® exclusive UniFusion™ bonding process. Top surface provides a softer, comfortable work surface. Diamond-plate design offers greater slip resistance and is easy to sweep or mop clean. Resists exposure to sparks making it the perfect choice for welding applications. RedStop eliminates the slipping and sliding on all types of smooth floor surfaces such as vinyl composite tile, painted or epoxy coated concrete, vinyl sheet flooring, carpet and ceramic tile. Sloped beveled foam on all undersides affords easy access on/off mat. Rubber top surface made from 100% recycled material.