It is made of nylon and helps relieve the pain and comfort caused by plantar fasciitis. One size fits both feet, up to 11 arch girths. The open heel design allows a wide range of movement during activities while supporting ankle tendons and joints. Suitable for people who like sports. It is very suitable for indoor and outdoor sports that need to tighten the ankle in sports. Comfortable, flexible, durable and washable. There is room to imprint your logo.