Get more out of your hike. Merrell socks are specially designed to ensure that the most serious hikers are able to make it to every summit. 60% Acrylic, 25% Wool, 13% Nylon, 2% Lycra Spandex. Cushioned sole: Merrell hiking crew socks are cushioned to give your feet extra comfort so you feel like you are walking on the clouds no matter how tough the terrain is. Arch support: Zoned arch support helps prevent fatigue in your feet to help keep you going for the longest of hikes. Reinforced heel and toe: Offers longer durability of the sock, so they will last and serve for you year after year. Machine Wash. Imported.