Enjoy the natural thermal properties of alpaca fiber that will keep you warm & comfortable while wicking away moisture. They’re brown, with a medium weight that’s great for any outdoor activities or just keeping your feet toasty warm around the house! Made in the USA, these socks are composed of 51% North American alpaca, 42% nylon, 5% acrylic, & 2% elastic. In size M (Women’s Shoe Size 6-10, Men’s 5-9.5), L (Women’s 10-13, Men’s 9-12), and XL (Men’s 12-15). These socks are machine washable and may be tumble dried on low heat.