The waterproof and breathable, Starston thrives in cold environments. Featuring an Aquasealz membrane which releases internal moisture, while denying the entry of water. Premium merino wool interior is soft and insulative, with natural odour resistance. Built for cold, high-altitude pursuits. Step out on your adventure with socks you can trust._·     Outer - Extra-durable Polycolon exterior, with 4-way stretch for an optimal fit ·     Mid-Section - Aquasealz 100% waterproof hydrophilic membrane releases moisture vapour from inside thesock·     Interior - Premium merino wool, with terry-loop knitting for extra comfort and sweat-wicking·     A seamless construction, with elastic support on the ankle, providing a close fit·     Outer Layer Fabric: 90% Nylon, 10% Elastane·     Middle Layer Fabric:  Aquasealz waterproof membrane·     Inner Layer Fabric: 35% Merino Wool, 35% Acrylic, 23% Polyester, 3.5% Nylon, 3.5% Elastane