The Smartwool Women's PhD Outdoor Light Crew Socks are designed to provide maximum comfort and performance on the trails. These socks feature a blend of merino wool, nylon, and elastane, offering excellent moisture-wicking properties and temperature regulation. The light cushioning provides targeted impact absorption, reducing fatigue during long runs. The 4 Degree Elite Fit System ensures a secure and comfortable fit, while the flat-knit toe seam prevents irritation and blisters. These socks are also highly durable and resistant to odor-causing bacteria. Whether you're running on muddy trails or rocky terrain, the Smartwool Women's PhD Outdoor Light Crew Socks will keep your feet dry, comfortable, and blister-free.