HydroDRY® is a 4 layer fabric consisting of wicking abrasion resistance lining, protective open cell foam, non-porous membrane and protective tricot. These layers are laminated together to create a 4 layer fabric. The fabric is constructed into a fully taped bootie on the inside of the product. Leathers, meshes and outer materials (such as the leathers) have a Robust Water Repellent finish to help prevent these materials absorbing water (which would make the product heavier, feel colder).