The Smartwool Women's PhD Outdoor Light Crew Socks are highly sought after by women who love backpacking. These socks are made from a blend of merino wool, nylon, and elastane, offering a perfect balance of comfort, durability, and stretch. The PhD 4-Degree Elite Fit System ensures a secure and comfortable fit, while the light cushioning provides support without adding bulk. These socks also feature Smartwool's Indestructawool technology, making them highly durable and long-lasting. Whether you're hiking, trekking, or backpacking, these socks will keep your feet dry, odor-free, and blister-free, allowing you to enjoy your outdoor adventures to the fullest.