All weather, waterproof sheet can be used anywhere. Excellent stretch and flexibility. Easy to cut and set up or install. First of its kind in Japan. 1. Made entirely of EPDM and butyl material (Ethylene propylene diene monomer) and is resistant to ultra-violet rays. Can be used in extreme temperature environments from -40°F to 194°F (-40°C to 90°C) without cracking or breaking. Highly flexible material can be shaped as required (can be used on corrugated sheets). Versatile sheet. Very popular. Suitable for use with the following materials: Metal, glass, concrete, polycarbonate, wood (polished).