Polyester Fibre and Elastane. Imported Best Womens Athletic Socks:Our womens low cut socks are designed with a top mesh ventilation that creates maximum airflow to keep your feet Breathe well. Arch Support Design:These womens running socks arch elastic provides added support and stability for a perfect fit. Sizing for Womens Ankle Socks:LITERRA womens athletic socks fit US women’s shoes sizes 5-11.If your size is too large, we do not recommend you add it. Various Scenes:Our athletic socks are designed with low cut rib cuffs.The low cut ankle socks are good matching for all of your favorite athletic shoes, running shoes, casual shoes and hiking shoes. Excellent Service:If you have any problem with our products, please feel free to contact us by simply replying this Email. We provide 24-hour after-sales service .We will definitely give you a solution that will satisfy you.