Smartwool Men's Classic Edition Full Cushion Hiking Crew Socks - The Classic Hike full cushion crew socks focus on comfort and durability, so you can go farther on every hike. Flat knit seams for additional comfort Elasticized arch brace for secure fit ZQ-certified Merino wool keeps things soft 4 Degree Elite fit system Full cushion 56% Merino Wool, 11% Nylon, 31% Recycled Nylon, 2% Elastane Style: SW013000