Salomon Alp 7 Socks are a high performance mountain sock suitable for extreme weather conditions. A technically calculated combination of fibres with differing properties results in a warm, insulating, breathable & durable sock that is ready to work with you no matter what. Alpaca fibre is abrasion resistant & maintains its insulating properties even when wet. Merino wool in the body of the sock works to produce extra warmth & unlike standard does not itch. Cordura assures outstanding durability & prevents abrasions, tears, scuffs & punctures.