Swiftwick Pursuit Ankle Socks - Black, SmallCrafted with Merino wool, the Pursuit features a reinforced heel and toe for maximum durability, even at shorter cuff heights. Merino provides warmth in winter, cooling in summer, and optimized moisture absorption. Natural Merino moves moisture away from your feet, keeping them dry, odorless, and blister free Temperature control keeps you warm in winter and cool in summer 64% Merino wool 33% Nylon 3% Spandex Machine wash cold. Tumble dry low. Do not