New, unused Smartwool Thick socks Size M 24cm-26.5cm Thank you for looking. The Hike series is a standard merino wool sock suitable for activities like mountaineering. You can choose from 6 types based on thickness and cushioning. The Heavy Crew is the second thickest option, with cushioning throughout the interior and a plush feel due to the use of thicker wool yarn than the Medium. It provides warmth suitable for winter low-mountain hikes. Flat Knit Toe Seam Arch Brace Hike Crew Cushion Heavy Materials: 69% Wool, 30% Nylon, 1% Polyurethane Mountaineering Hiking Camping Outdoor Montura The North Face Arc'teryx Mammut Marmot Haglofs Mountain Hardwear Teton Bros Millet Columbia Ternua Klattermusen La Sportiva Salomon Black Diamond Gender: Unisex Features: Merino Wool