For long, grueling summit missions, we depend on the Smartwool Athlete Edition Mountaineer OTC Sock to keep our feet healthy throughout the journey. The merino wool blend holds in warmth, moves away moisture, and fights off odors to keep us feeling cozy dry and fresh, while the stretch offers compression that keeps our blood flowing and staves off swell. Equipped with padding under the forefoot and heel, plus an Achilles strap, this pair is built to protect our feet for the long haul.