Venture further and stay warmer with the PhD Outdoor Heavy Crew. Heavy cushioning and the power of Merino help keep your feet warm, dry and comfortable whether you’re out on a multi-day trek, or trudging through the snow. Featuring Indestructawool technology for ultimate durability in high-wear areas, the 4 Degree elite fit system for a dialed fit, and our signature Virtually Seamless toe for extraordinary comfort in any trail shoe.

Features:

• PhD: Built for Performance in the Highest Degree
• 4 Degree Elite Fit System: Uses two elastics for greater stretch and recovery to keep the sock in place
• Performance-oriented fit with flex zone at ankle joint
• Indestructawool technology features a patent-pending construction method for exceptional durability and comfort
• Mesh ventilation zones provide optimum moisture management and maximum breathability
• Heavy Cushion: Heavy impact absorption and warmth for extended excursions
• Virtually Seamless toe

Specifications:

• Height: Crew 8.5" 
• Materials: 68% Merino Wool, 30% Nylon, 2% Elastane
• Care: Machine wash warm. Wash inside out. Do not bleach. Tumble dry low. Do not iron. Do not dry clean
• Style Number: SW001073

Size Chart: