Size Chart Natural fibers and high-tech compression seamlessly come together in these men's Merino socks. Enjoy the comfort of Merino wool, as well as the many benefits of CEP's signature compression technology, which include enhanced performance, increased circulation, and injury prevention. Their low-maintenance design means they are easy to machine wash and dry. Features: - Encircles your muscles more than 300 times in graduated compression - Wool-blended, anatomically padded cushioning, anti-blister, anti-hotspot - Seamless toe-closure for maximum comfort - Merino wool and synthetic fibers provide thermal regulation and proven compression - 55% Polyamide (Nylon), 17% Merino Wool, 15% Elastane, 13% Polypropylene - 20-30 mmHg graduated compression - Low-maintenance ownership - machine wash and dry