This composite combines pure wool felt with a latex foam surface, which absorbs pressure and cushions impact. The closed-cell structure compresses to absorb pressure with instantaneous recovery. The pure wool felt is strong and conformable to deflect constant pressure. With hypoallergenic adhesive backing. 3/16" x 8-7/8" x 17.5" (5mm x 22.5cm x 45cm). Box of 4 sheets.