SEALSKINZ Unisex Mautby Waterproof Warm Weather Sock with Hydrostop An ankle-length, fully breathable sock, with Hydrostop™. 100% waterproof, our lighter socks are perfect for running, hiking or any activity.The Aquasealz™ membrane releases body-generated heat and moisture, while denying the entry of water. Natural bamboo lining has strong moisture-wicking properties. Hydrostop™ prevents water trickling down leg into top of sock. Colors may vary slightly, depending on lighting and screen/monitor settings. I take pride in the items I sell and will be honest with any flaws I see. If you are unhappy, please reach out so I can make it right. ♥️