Raised nubs remove dirt and moisture from shoes and trap it below foot level Water dam border holds up to 1.5 gallons of water per square yard PET fabric is made from 100% post-consumer recycled plastic from drink bottles, and SBR rubber backing contains 20% recycled rubber from car tires Beveled edges provide a safe transition from floor to mat Certified high-traction by the National Floor Safety Institute (NFSI) Reinforced rubber nubs prevent pile from crushing and extend the performance life of the mat Solution-dyed PET fabric is resistant to staining, dries quickly, and will not fade or rot Available in 8 colors with choice of Classic (rubber) border or Fashion (fabric) border Attractive herringbone pattern 78-mil SBR rubber with cleated backing for placement on carpet or smooth backing for placement on hard floor surface