These ribbed crew socks from ROTOTO feature a dual-layer construction that pairs a warm wool interior with a cotton outer surface, protecting the lining from abrasion while extending the sock's lifespan. The blend of 46% cotton, 38% wool, 14% nylon, and trace amounts of polyester and polyurethane delivers a balance of insulation, structure, and comfort suited to everyday cold-weather wear. Available in earthy seasonal colorways including ash grey, they make a practical addition to any winter wardrobe. Hand wash recommended to preserve shape and prevent shrinkage.