TPU membrane is environmental protection material,which could be able to bear cold,could breathe freely,anti-oxidation Detailed Description:(1)Construction:Three layers,both layers is Orange nylon fabric,TPU is 0.04mm with waterproof and breathable membrane.(2) WIdth:60"(3)Color:orange (4) It could be used ith the waterproof shoes,waterproof bag.Welcome to contace Us!!! TPU composite material