Unique ridged construction effectively removes and traps dirt and moisture. Exclusive rubber-reinforced face nubs prevent pile from crushing, extending product life. Anti-static 100% premium polypropylene fiber system. Fabric dries quickly; will not fade or rot. Provides anti-slip surface even when wet. Special non-thermoplastic Tri-Grip™ rubber backing insures dimensional stability. To be installed in high-traffic areas such as entrances, recessed mat wells, lobbies, vestibules, or elevators.