Versatile comfort and protection for a wide range of activities Windproof, waterproof, and breathable Close fitting, seamless construction - prevents rubbing AquaDynamicDesign (A.D.D.) - engineered for performance in any weather StretchDry technology - stretchable waterproof membrane technology Close fitting ribbed tops - snug fit Polyester linings - comfortable moisture management Elastic ankles and insteps - extra support and comfort Keep your feet dry and comfortable through any activity and weather with the versatile performance of the Lightweight Knee-length Waterproof Socks from Sealskinz. Engineered for performance in any weather, these windproof, waterproof, and breathable socks are designed to fit snug while providing superior protection from the elements. One of Sealskinz' A.D.D. sock designs, the Lightweight Knee-Length feature StretchDry membrane technology built into the synthetic sock for next to skin dry comfort. Smooth polyester linings give you comfortable moisture managing performance, while the socks' elastic ankles and insteps provide extra support for your feet. Close fitting ribbed tops help ensure a snug fit that keeps the socks in place. Machine wash. Imported. Manufacturer style #: 711140100130. Sizing Chart Sock Size Shoe Size S 3.5-6.5 M 7-9 L 10-12 XL 13-15