Blue and orange geometric patterned stretchy fabric - Color: Blue and orange geometric pattern - Material: Stretchy fabric For dust and wind protection. Not waterproof. Thank you for viewing. Attach the hooks to the shoelaces to secure the front. The back is secured by cutting and attaching the adhesive backing of the included 5x20cm Velcro. If you run a rubber string through the arch of the shoe and sew it to the gaiter, the Velcro on the heel may not be necessary. Compatible shoe sizes: Approximately 25.5~27.5cm