The Smartwool Women's PhD Run Ultra Light Micro Socks are the ultimate choice for women who are passionate about ultrarunning. These socks are made from a blend of merino wool, nylon, and elastane, providing exceptional comfort, moisture management, and durability. The ultra-light cushioning offers impact protection without adding bulk, allowing for a natural and unrestricted running experience. The 4 Degree Elite Fit System ensures a secure and snug fit, while the Virtually Seamless toe construction eliminates irritation and blisters. These socks also feature targeted ventilation zones to keep your feet cool and dry, even during the most intense workouts. Whether you're running on roads or trails, the Smartwool Women's PhD Run Ultra Light Micro Socks are designed to keep up with your every stride.