The Little Giant Rolled Rubber Mats have a non-porous surface that discourages bacteria buildup. Anti-slip checker-plate pattern reduces chances of injury. Great for hallway runners, corridors, walkways, doorways, and high-traffic areas. Made from 70 percent recycled rubber and 30 percent styrene butadiene rubber (SBR). Easy to clean, dries quickly. ISO 9001 certified, passes flammability standards. 40 feet long by 4 feet wide, 1/4 inch thick.