Darn Tough Women's 1/4 Wool Ultra-Light Athletic Socks-6 Pack Special Offer PAY FOR 5 AND GET THE 6th FOR FREE 52% Merino Wool, 44% Nylon, 4% Lycra Spandex Unconditional Lifetime Guarantee Performance fit and Unsurpassed durability Women's Sizes: Small 4.5-7, Medium 7.5-9.5, Large 10-11.5