The Bridgedale Men's Hike Ultra Light T2 Merino Endurance Crew Socks are designed to ensure dry, comfortable feet when you're out conquering the hills__ With excellent moisture management thanks to overfoot ventilation and carefully considered details including flat toe seams and Thermofit technology.__ With a Y heel to prevent any slippage and an advanced zonal padding system to provide all the protection you need in a crew length sock with great next-to-skin comfort. __56% Merino wool, 41% Nylon/Polyamide, 3% Lycra Elastane