Features:- Sock Height: Over-the-Calf- Sock Cushion: Full Cushion- Indestructawool™ technology for enhanced durability- 4 Degree™ elite fit system for a dialed-in, performance-oriented fit- Shred Shield™ technology reduces wear from toes- Wider welt for secure fit and comfort- Body-mapped mesh zones for added breathabilitySpecifications:- 61% Merino Wool 10% Nylon 27% Recycled Nylon 2% Elastane Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.Care:- Machine Wash Warm, Inside Out- Do Not Bleach- Tumble Dry Low- Do Not Iron- Do Not Dry Clean Compare prices from: Smartwool in Men's Underwear