Alpinestars Polar Goretex Motorcycle Gloves - BlackAlpinestars Polar Goretex Motorcycle Gloves The Alpinestars Polar Gore Tex Gloves, made of polyamide on the top of the glove and goatskin leather found on the palm. What make this glove waterproof is the Gore Tex membrane. Gore Tex is a world renowned waterproof and breathable membrane that features pores. These pores are smaller than water to keep rain out, but larger than water vapor, allowing perspiration to escape. As most of Alpinestars gloves,