Polyethylene closed cell foam in sheets or cut to size. Lightweight and flexible. Wear and tear resistant. Temperature resistant between -60c and 90c. Available in thicknesses of 3, 5, 10, 12, 15, 20, 25, 30 and 50mm in sheets or cut to size. This grade of Closed cell foam is not fire retardant; if you need fire retardant or other thicknesses