Offering state-of-the-art thermal and waterproof protection, the Stanfield is built for the extreme cold. An Aquasealzmembrane releases internal heat and moisture, while denying the entry of water. Handcrafted in the Sealskinz factory in Kings Lynn, Norfolk.TechnologyOuterExtra-durable nylon exterior, with 4-way stretch for an optimal fit.Mid-SectionAquasealz100% waterproof hydrophilic membrane releases moisture vapour from inside the sock.InteriorPremium merino wool and acrylic blend, with terry-loop knitting for extra warmth and sweat-wicking.A seamless construction, with elastic support on the ankle, providing a close fit.Our socks are built to last, overcoming the toughest of environments time and time again. Interior terry-loop knitting provides warmth in cold conditions, with micro air pockets acting as insulators. A signature Aquasealzmembrane provides complete protection against the elements. Waterproof and thermal, the Stanfield thrives in extreme climates. A