Socks using Porelle membrane, a completely waterproof, windproof, and breathable material. Made with lightweight Coolmax FX material to keep your feet dry and comfortable even in rainy conditions. DexShell | Waterproof & Breathable Ultra Light Viking Socks (Ankle) DS642H (Hi-Vis Yellow) DS642V (Vivid Yellow) DS642 Color: DS642H (Hi-Vis Yellow) Size: L size Although new and unused, the item has been opened. It will be shipped slightly compressed.