Merino Wool Trekking Knicker Socks Men's Thick Socks Merino Wool Montbell mont-bell High Socks Socks Long Socks Men's Trekking Outdoor Long Tights Snow Mountain Climbing Outdoor Travel Camping M size 24cm to 26cm I wore them twice after purchasing. These knicker socks are made of merino wool, which has excellent heat retention and moisture absorption/release properties. They also have excellent deodorizing effects, and the shrink-resistant processing reduces shrinkage during washing. They have excellent cushioning and moderate heat retention, making them useful for all types of mountain climbing. Suitable Uses From heavy mountaineering boots to light hiking boots Specifications [Material] 58% wool + 26% nylon + 14% polyester + 2% polyurethane [Average Weight] 150g [Color] Gray (HCH) [Size] M (24-26cm) [Thickness/Pile] Thick/Full Pile [Features] Tapered shape / L-shaped pattern / Full support fit system / Reinforcement