Mat is designed for aircraft mechanics. Made of durable, resilient, closed-cell foam, full 1” thick industrial grade rubber, silicone free. Lightweight, won't absorb liquids (including Skydrol), self-extinguishing, and will not compression set. Insulative and non-conductive (not rated), conforms to irregular surfaces, does not disintegrate and cause FOD, non-skid surface, keeps tools in place, and protects sensitive surfaces and equipment. Dimensions 35” x 41” x 1”