husky liners trackmat mechanic matTrackmat Mechanic Mat is the perfect addition to your garage pit or trailer. This knee saving fold able mat is plush yet ultra tough. 3 4 in closed cell foam fused with 100 polypropylene fibers. Stain oil and chemical resistant to withstand almost anything. Wont retain water and cant mold or mildew. Use as a pad to kneel on or as a creeper to lay on. Keeps you comfortable and clean while working. Light weight and portable impact absorbing cushion.