Women's Runner & Workout Athletic Socks High Quality Materials  Our high-performance athletic socks are made of 60% polyester/ 35% nylon/ 5% spandex material that consists of a higher thread count compared to everyday socks. This thread count results in a softer, stronger, and more durable sock. Soft Cushioning & Built-In Mesh  These Fitness Running Socks feature terry soled bottoms which results in a soft sole cushioning for your active feet. This allows for a long-lasting comfort throughout your entire workout or run in your high impact areas of your heel and arch. The additional built in mesh venting on top of our running socks allows for better breathability and helps keep your feet cool during your toughest run. Seamless Toe & Ankle Tab  Seamless toe construction is built into our Womens Fitness Socks to ensure protection against chaffing and irritation caused by traditional toe seams. Our additional Achilles tab helps in protecting against blistering on the back of the foot and ankle when you go on those long runs. Sizes & Uses  Small/Medium- Womens Shoe Size 6.5-9 Medium/Large- Womens Shoe Size 9.5-12 Perfect for long and short distance running, tennis, sports-related activities, cycling, dance, cheerleading, or walking. 100% Money Back Guarantee- If you are not 100% satisfied with our product, we offer a 30-day money back guarantee, no questions asked.