With full, plush cushioning, the Classic Mountaineer Maximum Cushion Crew sock is just right for your long-distance and backpacking hikes. Its elasticized arch brace offers secure, lasting fit, and its flat knit toe seam helps with in-shoe comfort. Our thickest, warmest sock, this wool crew helps ensure that your feet stay comfortable, no matter how long the hike. Features Sock Height: Crew Our first sock construction, only now featuring recycled nylon (content varies by style) Our thickest, warmest sock Elasticized arch brace for secure fit Flat knit toe seam for additional comfort Made in the USA of Imported Yarn: 74% Merino Wool 8% Nylon 17% Recycled Nylon 1% Elastane