Kempf Rubber Anti-fatigue Drainage Mat, Interlocking for Wet and Dry Areas, 36-Inch by 36-Inch, Black 36 x 36 x 3/8th Rubber Anti Fatgue Mat for use in wet or dry aread 3/8th" thick, made of Rubber, cushioning effect to prevent fatigue Round holes provide good drainage Ideal mat to be used in front of a outdoor grill Interlocking feature helps in covering a larger area by expanding the size of the mat