All Armor All® waterproof mats are made from a material which has a soft, felt-like surface and a non-slip, waterproof backing. The mats are thin – only 1/8” thick – but don’t let the thickness fool you. Due to the patented Drymate® technology used in the production process, these mats hold a tremendous amount of liquid. The anti-flow property of the material traps and contains spills, preventing them from flowing onto adjacent surfaces while the thin construction of the mat allows moisture to evaporate quickly. The underside of the mat is coated with a special bonded backing that prevents moisture from seeping through, protecting surfaces below.