Danner’s lightweight Run Time work socks feature targeted cushion and venting zones in addition to an arch support system constructed to reduce fatigue. Our seam-free toe design reduces bunching and blisters, ensuring long lasting comfort to get through any shift. Non-Mulesed Merino Wool Blend: Ethically sourced, non-mulesed Merino Wool blend makes for a naturally breathable, soft, itch-free sock. Seam-Free Toe: Danner's seam-free toe design helps reduce bunching and blisters. Cushion and Venting: Targeted cushioning where you need it in addition to ventilation channels to help regulate temperature. Reinforced Heel & Toe: These socks are designed with a reinforced toe and heel to provide additional durability. Fabric Content 63% Merino Wool, 34% Nylon, 3% LYCRA Spandex Care Instructions Machine was inside out in cold water. Tumble dry low or lay flat to dry. Sock Size Men's US Shoe Size Women's US Shoe Size Small - 4 - 7 Medium 5.5 - 8.5 7.5 - 10 Large 9 - 12 10.5 - 13.5 X-Large 12.5 - 15.5 -