NoTrax Rubber 447 Comfort-Eze Anti-Fatigue Drainage Mat, for Wet Areas, 24" Width x 36" Length x 3/8" Thickness, Black Long Lasting rubber compound molded into a superbly comfortable bubble design Bubbles are molded to maximize flex and create air flow for ergonomics Design stimulates workers comfort and promotes product longevity All 4 sides feature an integral bevel border system Overall thickness is 3/8"