Unisex socks. Heavyweight. In-turned welt for a relaxed, comfortable fit. Elastic grip sections for fit and support. Cordura reinforced heel and toe for extra durability. Fully cushioned in PrimaLoft Silver performance yarn (Merino blend) for warmth and comfort. Isofil sole wick moisture and keep feet dry. Ventilation channels for breathability. Fine recessed toe seam. Fabric: 28% PrimaLoft Silver yarn, 28% Merino Wool, 29% Isofil polypropylene, 8% Nylon, 5% Cordura polyamide, 2% Lyrca Elastane. To prolong the life of your socks we recommend that you wash them inside out. Wash dark colours separately. Do not use fabric conditioner. 40 degrees wool cycle. Do not bleach. Do not iron. Tumble dry on low heat. Do not dry clean. Ref: UTHZ110