The Smartwool Women's PhD Run Ultra Light Micro Socks are specifically designed for women who are passionate about ultrarunning. These socks are made with a blend of merino wool and synthetic fibers, providing exceptional comfort and moisture management. The ultra-lightweight construction offers a barely-there feel, while the targeted cushioning in high-impact areas provides added support and protection. The seamless toe design eliminates friction and prevents blisters. These socks also feature a women's-specific fit for optimal performance. Whether you're hitting the trails or pounding the pavement, the Smartwool Women's PhD Run Ultra Light Micro Socks are a reliable choice for women's ultrarunning.