These Horizon Merino Trekker Socks are ideal for all hiking and walking activities. The super fine Merino Wool is blended with polypropylene to provide warmth, comfort, durability and performance. Combining deep cushioning and a technical sweat wicking fabric, these durable socks are perfect for long treks carrying a heavy load. Coolmax ensures dry, cool feet, reducing the chance of blisters. Cordura® in the heel and toe ensures the socks are incredibly durable.