The Classic Mountaineer Mens Maximum Cushion Crew Socks from Smartwool are the perfect hiking essential. The full cushioned sock gives your maximum support and comfort. The elastic arch gives a foot hugging effect that is long lasting. The thick sock will keep your feet warm in the coldest of weather. With full, plush cushioning, Smartwool's Classic Mountaineer Maximum Cushion Crew sock is just right for those long-distance walks and backpacking trips. Its elasticised arch brace offers a secure, lasting fit, and its flat-knit toe seam helps with in-shoe comfort. Smartwool's thickest, warmest sock, this wool crew helps ensure that your feet stay comfortable, no matter how long the hike. Extra heavy cushion - the ultimate in impact absorption and warmth. Features recycled nylon. Smartwool's thickest, warmest sock. Elasticated arch brace - for secure fit. Flat knit toe seam - for additional comfort. Fabric: 73% Merino Wool 17% Recycled Polyamide 10% Polyamide