 
                                        Outdoor Research <br> Tundra Aerogel Sock
Features Fabric: 100% Polyester Shell, 100% Polyester Primaloft Weight: 5.5 oz/ 156 g Color: Black U.S. Sizes Small: 4-6 Medium: 6-8 Large: 8-10 X-Large: 10-12 Description Throwing a pair of the high-ankle Tundra Aerogel Socks into your pack turns any adventure into a luxurious experience without the extra weight. These ultralight indulgences will make the biggest difference in your snow camping, mountaineering, and backcountry hut trips. The Tundra Aerogel Socks uses NASA-trusted technology to deliver the perfect socks for long, frigid winter days in alpine environments. Insulated with PrimaLoft® Gold insulation, these socks are water-repellent, breathable, and packable, and the Pertex® Quantum shell is windproof and water-resistant. They feature an updated design with an ankle cinch top and an anti-slip sole. Whether exploring the Arctic or needing reliable protection against cold winter winds, the Tundra Aerogel Socks are an excellent choice for anyone seeking the ultimate warmt
