Darn Tough Men's Solid Basic Crew Light 62% Merino Wool/34% Nylon/4% Lycra Spandex Legendary Darn Toughness with sophisticated styling True Seamless construction provides a smooth performance fit; no slipping, no bunching, and no blisters. Constructed from fine guage Merino wool which is naturally antimicrobial and antibacterial Still made in Vermont, USA Still unconditionally guaranteed for life