Lying on the ground to work on the car can be hazardous to you and to your clothes! Wet grass, spilled oil, sharp stones, and general dirt can make a mess of you and your clothes. This thick foam mat protects you from dampness, uneven ground, and even hot or cold pavement. When you're done, just wipe off the heavy vinyl cover. The 23 1/2" x 49 1/2" mat folds for easy storage. Black only.