The Smartwool Men's Performance Hike Full Cushion Crew Socks use cushioning on the entire sock to help maximize warmth and protection. The ZQ-certified Merino wool hike socks are built with their top sock tech, including Indestructawool technology for enhanced durability. The socks feature a 4 Degree Elite Fit System for a performance-oriented fit, Virtually Seamless toe for maximum in-shoe/boot, comfort mesh zones for additional breathability, and new ply structure that reduces pilling while enhancing hand-feel and comfort. Now that's something you can feel good in and about.Features4 Degree elite fit system for a dialed-in, performance-oriented fitAdditional body-mapped mesh zones for added breathabilityVirtually Seamless toe for enhanced comfortIndestructawool technology with extended durability zonesComfort welt with 'stay put' fitHeight 8"56% Merino Wool, 11% Nylon, 31% Recycled Nylon, 2% Elastane