Darn Tough's lightly cushioned merino wool ski socks have become a favorite among women skiers across the world. Their seamless construction and high quality materials result in one of the most comfortable, highest performing socks on the market. Merino wool provides insulating properties even when wet, making it an awesome choice for a ski sock fabric. It also has natural antimicrobial properties that repel bacteria and odor. All this in a sock that's made in Vermont and features a lifetime guarantee? Yup.