Thermo-Tec 14700 12" X 12" Super Sonic Mat, 2 Piece The high density polyethylene film with an aluminum foil composite is abrasion and tear resistant The gray film provides structural integrity and strength, allowing the material to bend, move and return to shape even under tension forces The product is 1/8 inch in thickness, contains a high temperature adhesive backing and is easy to trim and fit The rubberized compound is applied with the high temperature adhesive to absorb all those out of control noises