Sof Sole's PFAS-free Waterproofer protects athletic and performance materials from water while maintaining the fabric's breathability. Great for use on shoes, boots, hats, jackets, and other apparel, the design of Sof Sole's PFAS-free Waterproofer makes it easy to quickly and thoroughly apply for effective protection within minutes. A single treatment protects your gear for up to two months while maintaining the fabric's breathability. The invisible protection also helps prevent stains. Does not contain PFAS.