Getting active has never felt more comfortable in our Athletic SMRTWL Logo Crew Socks. Feel nonstop support on the arch and ankle from our updated Smartwool® 4 Degree™ fit system, designed to keep the sock in place no matter which way you move. Mesh zones add breathability to stop sweaty feet in their tracks, plus a reinforced sole helps keep these socks durable and always up for the challenge.Sock Height: CrewSmartwool® 4 Degree fit system with elasticized arch and ankle support designed to keep the sock in placeFlat knit toe seam for additional comfortReinforced sole for additional durabilityVirtually Seamless™ toe for enhanced comfortMesh zones for added breathabilityMade in the USA of Imported Yarn: 62% Merino Wool 11% Nylon 25% Recycled Nylon 2% Elastane *Specific percentage ofRecycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.