Darn Tough Men's Merino Wool No-Show Light Cushion Athletic Socks 51% Merino Wool/45% Nylon/4% Lycra Spandex Made in US Constructed from fine guage Merino wool which is naturally antimicrobial and antibacterial Half the wool yarn weight of Darn Tough's cushioned socks with cushioning on the base of the foot Still made in Vermont, USA Still unconditionally guaranteed for life True Seamless construction provides a smooth performance fit; no slipping, no bunching, and no blisters