The Fox River Women's Wick Dry Alturas Ultra-Lightweight Liner Socks are highly rated backpacking socks designed to be worn as a base layer. These socks are made from a blend of acrylic, nylon, and spandex, offering excellent moisture-wicking, breathability, and quick-drying properties. The ultra-lightweight design provides a snug fit without adding bulk, making them perfect for layering under thicker socks. These socks also have a smooth toe seam to prevent irritation and blisters. Whether you're hiking, backpacking, or engaging in other outdoor activities, these liner socks will keep your feet dry, comfortable, and blister-free.