Darn Tough Vermont Men's Standard Issue Mid-Calf Light Cushion Merino Wool, Nylon, Lycra Spandex Made in USA This Mid-Calf delivers 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