Smartwool Mountaineer Classic Edition Maximum Cushion Hiking Crew Socks - With full, plush cushioning, the Classic Mountaineer Maximum Cushion Crew sock is just right for your long-distance and backpacking hikes. Crew sock height Elasticized arch brace offers secure, lasting fit Flat knit toe seam helps with in shoe comfort Thickest, warmest sock 74% Merino Wool, 8% Nylon, 17% Recycled Nylon, 1% Elastane Style: SW013300