ROCKERZ Edge Cover Blade Case Figure Skating Skate Boot Accessories - Colors: White, Lilac, Teal - Brand: ROCKERZ - Material: Plastic - Application: Skate Boot Edge Cover - Spring: Gold - Retail Price: 5,500 yen (tax included) Used on Risport boots, size 22.5cm. Can be cut to reduce size. Purchased at Kosugi Skate. Used for about a year.