Darn Tough socks are comfortable, durable and ready for anything. There are loads of variations for cushioning and materials to ensure that you get the perfect sock for whatever you do in them. This Micro Crew has earned a hallowed place in the hearts of many a through-hiker who demand more from a sock. Comfort, durability and fit that never rests. Features: Darn Tough uses a custom-count, shrink-treated merino wool that enhances comfort and durability for outdoor activities. Merino wool wicks away moisture and breathes to regulate temperature for outstanding comfort in a variety of conditions. High-density cushioning underfoot Reinforced heels and toes and elastic support around the arch. Ring-toe construction hides seams and enhances comfort. Non-cushioned, wide-ribbed, crew-height legs Darn Tough recommends that you machine wash socks inside out in warm water on gentle cycle and tumble dry on low.