Rubber-Cal 03_185_WBK Bubble Top Anti-Fatigue Matting Rubber Mats, 5/8" x 3' x 4', Black Borders These black rubber mats are an eco-friendly product made with natural and reclaimed rubber materials for a "green" flooring option Natural rubber provides friction combined with bubbled surface for non slip floors with extra traction Anti fatigue matting designed with air-trapping qualities for bounce-back support to provide added relief Commercial rubber matting is easy to clean with common household cleaners or simply hose it off Ideal product as a garage floor mat or kitchen mat for added safety of a non-slip surface as well as its anti-fatigue flooring qualities