Description Experience durability at its peak with the PhD® Outdoor Light Crew. Featuring Indestructawool™ technology, a patent-pending wool-based durability construction, these socks are ready for any adventure on your list. Plus, with redesigned mesh zones, a Virtually Seamless® toe and the 4 Degree™ elite fit system, these socks have comfort covered. Features Indestructawool™ technology for enhanced durability 4 Degree™ elite fit system for a dialed, performance-oriented fit Body-mapped mesh zones for added breathability Virtually Seamless™ toe for enhanced comfort 8.5" overall height 56% Merino Wool, 41% Nylon, 3% Elastane Style: SW001069 Benefits 4 Degree™ Elite Fit System For a dialed, performance-oriented fit with flex zone at ankle joint Indestructawool™ Indestructawool™ technology features a patent-pending construction method for exceptional durability and comfort Light Cushion Light cushioned sole for added warmth with minimal volume PhD® Built for Performance in the Highest Degree Care Machine wash warm, wash inside out. Do not bleach. Tumble dry low. Do not iron. Do not dry clean.