Looking for the ultimate cushion and wool sock? The Merino Extreme is our most cushioned, blister-free outdoor performance design yet. This Double Layer performance style works from the inside out to keep your feet feeling dry, comfortable, and blister-free. The inner layer of these performance socks uses Merino Wool to wick away moisture and cushion the heel to toe to keep you comfortable. While the outer layer provide maximum protection from blisters using a second layer of Merino Wool, for added comfort and durability while hiking, trekking, trail running, or backpacking. No matter where your next adventure takes you, have a more comfortable experience in Wrightsock's Merino Extreme.