Durable, odor-resistant, expedition-weight merino socks designed for maximum comfort and premium fit, our Mountaineer Mid Calf socks are ideal for big climbs and snowy conditions.FEATURES:- Expedition weight, fully and densely cushioned mountaineering sock.Specifications:- Weight :176 g - 80, Wool, 19% Nylon, 1% LYCRA® Spandex.CARE:-Machine Wash With Similar Colors - Do Not Use Softeners - Do Not Use Bleach - Tumble Dry On Low - Inside Out.Through merino wool Icebreaker is able to create a sustainable product.Wool is a natural, durable and biodegradable product.Icebreaker wool is obtained following ethical criteria and is part of the ZQ program that ensures that farmers take care of the sheep and the land they inhabit.