Darn Tough Men's Hiker Book Sock Full Cushion (Style 1405) Merino Wool 66% Merino Wool, 32% Nylon, 2% Lycra Spandex Made in USA PAY FOR 5 AND GET THE 6th FOR FREE | MADE IN THE USA: Every pair of socks is knit in Northfield, Vermont - the perfect testing ground for the finest premium all weather performance socks. BOOT SOCK HEIGHT  Sits mid-calf for added protection and warmth. A sturdy companion. For a shorter sock, check out style 1466. FULL CUSHION  High density cushioning throughout the entire sock for full on comfort and performance. COMPOSITION  Repels Bacteria and Odor. Crafted with 66% Merino Wool /32% Nylon /2% Lycra Spandex. 1441 stitches per square inch provides extra cushioning, durability, and a foot hugging fit. GUARANTEED FOR LIFE  Darn Tough's famous guarantee - if these socks wear, tear, or develop holes, Darn Tough will replace them no questions asked. No strings. No conditions.