Farm to Feet Women's Boulder Lightweight Hiking Socks 72% Merino Wool 27% Nylon 1% Spandex Made in US Merino wool is soft, itch-free, naturally odor and bacteria resistant, cool in the summer and warm in winter Reinforcing yarns woven into the stretch shell increase durability, while wool fibers sit closer to the skin for maximum insulation Bottom-of-foot cushioning across the entire sole provides shock-absorption that reduces impact from running and hiking and fitted instep reduces bulk Full-density cushioning provides better insulation, wicking, impact protection and faster moisture absorption to keep you dry and reduce friction Reinforced construction and low-stress seam placement reduce wear and tear, increasing the life of the sock