These neoprene / EPDM (Ethylene Propylene Diene Monomer) sponges are available in 10-meter lengths with a choice of thicknesses and widths. This new improved version of our standard polyurethane sponge has a black finish, is waterproof, has an operational working temperature of -40°C to +70° C, has good resistance to air and UV light, and good resistance to.