Our Merino 10 tab socks use a distinct blend of Merino wool and Tencel Fibers (which is made from Eucalyptus leaves) to create a more advanced Merino wool sock. Newly redesigned with a reinforced heel and toe for added durability and crafted with Targeted Compression and Anatomical Design to provide a superior fit and feel. Features Merino Wool & TENCEL Anatomical Fit Targeted Arch Compression The Perfect ToeA(R) Blister Tab Seamless Heel Made in the USA Specs Max Cushion Maximum cushioning that protects the foot, with added impact protection and comfort. Tab Our most popular silhouette. Rests below the ankle with a tab for comfort and blister protection from friction caused at the back of the shoe. Materials & Care Merino Wool & TENCEL A unique blend of rarefied 200-needle thread count merino wool spun with TENCEL fibers, for a game-changing sock that&';s comfier, stretchier, drier, and more durable than ever before. 43% Nylon; 28% Wool; 27% Tencel; 2% Spandex Care Machine wash cold or warm, on the gentle cycle with a mild soap, avoiding bleach and fabric softeners. Tumble dry low. For best results, hang or lay flat to dry. Turn inside out before washing.