Darn Tough Men's Fred Tuttle Micro Crew Cushion Sock ( Style 2005 ) Merino Wool - 6 Pack Special 63% merino wool 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. MICRO CREW HEIGHT  A shorter, more concise take on the traditional crew height. Peeks just above the top of a standard hiking boot. CUSHION  Mid-level cushion density under foot. A warm and ultra-comfortable choice when conditions demand it. COMPOSITION  Repels Bacteria and Odor. Crafted with 63% Merino Wool /33% Nylon /4% 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.