The Tri-Grip™ is the highest quality tufted nylon-on-rubber mat designed for high-traffic areas with heat-set, Ultra-Twist™, nylon-yarn construction that traps moisture and dirt before they're tracked on the floor or carpet. Face: Tufted Textile, 18 ozs/sy. Tight two-ply-twist 100% Nylon Filament. 3/8" Pile height. SBR Rubber.