FeaturesSock Height: CrewOur first sock construction, only now featuring recycled nylon (content varies by style)Our thickest, warmest sockElasticized arch brace for secure fitFlat knit toe seam for additional comfortMade in the USAof Imported Yarn: 74% Merino Wool 8% Nylon 17% Recycled Nylon 1% ElastaneStyle:SW013300DescriptionWith 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.BenefitsMaximum CushionOur fullest, plushest sock. Great for consumers who are hiking long distances and carrying heavy packs.Made In The USACareMachine Wash Warm, Inside OutDo Not BleachTumble Dry LowDo Not IronDo Not Dry CleanWARNING: Cancer and Reproductive Harm -www.P65Warnings.ca.gov