The Smartwool Women's PhD Outdoor Light Crew Socks are perfect for backpacking adventures. These socks are made with a blend of merino wool, nylon, and elastane, providing excellent moisture-wicking and temperature regulation. The PhD 4 Degree Elite Fit System ensures a snug and comfortable fit, while the light cushioning offers impact protection without adding bulk. These socks also feature a flat-knit toe seam to prevent irritation and blisters. With their durability and performance, these socks are a top choice for women who love backpacking.