Approach the trail in confidence with the Hiking Medium Crew sock from Smartwool. The wool fabric blend wicks moisture for active comfort. The arch brace increases stability, supporting your outdoor stride. Product features include: 72 percent wool, 26 percent nylon, 1 percent spandex, and 1 percent polyester fabrication, Pre-pack of three pair, Spandex arch brace, Made with New Zealand Merino Wool.