Trackmat 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.Folds down to 2ft. by 2ft.size so you can throw it in your trunk. The track experience has never been better.