Icebreaker Merino Ski Over The Calf Socks, New Zealand Merino Wool 80% Merino/16% Nylon/4% Lycra Made in US 80% merino wool, 16% nylon, 4% lycra, sock height: 41.9cm (16.5-inch) Strategic medium and light cushioning Achilles instep support prevents slipping Lin toe seam reduces bulk to prevent blisters