The Men's Hike Lightweight Merino Comfort Boot Sock feature on the DofE Expedition Kit List. Featuring excellent moisture management thanks to overfoot ventilation and carefully considered details including flat toe seams and Thermofit technology. These boot length, snug merino wool blend socks are designed for all day protection and superb next-to-skin comfort. Material: 19% Merino Wool, 53% Coolmax Polyester, 2% Nylon Polyamide, 1% Lycra Elastane.