NoTrax Rubber 974 Ergo Mat Grande Anti-Fatigue Mat, for Dry Areas, 3' Width x 5' Length x 1" Thickness, Black Corrugated rubber top surface is resilient and adds traction Dense closed cell sponge base provides cushioned comfort Exclusive Red Stop technology creates non-skid bottom, reducing mat movement Unifusion bond eliminates mat de-lamination; bond is guaranteed for life of the mat 1" thick, beveled edges on all 4 sides for safety