The ForceField Crease Preventers feature a patented design* that prevents creasing and wear in your shoes. They fit comfortably inside the toe box to protect the shape of sneakers. Each crease preventer includes two adhesive strips on top for easy placement in the toe box, and they are designed to stay in place during movement.
*Patent # 8,490,300
Small: Kid's size 4-7 , Women's size 5-10
Medium: Women's size 10.5+ , Men's size 8-11
Large: Men's size 11.5+