A good sock for a day on the mountain goes a long way—a low-profile zero cushion profile for the least amount of material in your boots. Don't worry about your socks falling down thanks to the Stay Up Cuff, these socks also are made with a foot molding memory stretch for the best possible fit. Instep support, ankle bands, Achilles support, mesh ventilation, and a snug-fitting heel these socks are packed with intuitive features and design.