Sponge-on waterproofing for full-grain leather. Waterproofs, maintains support and breathability. Apply to all full grain leather footwear (work, fashion, leisure and sports). Safe to use on footwear with breathable membranes e.g. Gore-Tex, SympaTex, eVENT etc. Nikwax Aqueous Wax adds water repellency, maintains breathability, and prolongs life and performance of all smooth leather footwear. 4.2 oz.