Material: Nylon + Nylon Size: The length and width of the flat socks are about 18*7cm, elastic and stretchable, the error is about 1cm It will be stretchy to fit most women and girls With the non slip silicone pad at the back heel, the women low cut socks will be anti slip for long walking and it will protect your heel as well The invisible boat socks will be perfect for your favorite dance shoes, walking shoes, boat shoes, running shoes, sneakers and loafers