Chaya Onyx Boot Only — the high-performance derby boot on its own: build the exact derby setup you want around Chaya's finest shell. For intermediate to advanced skaters.The shell combines lightweight carbon fiber with silver glass-fiber for excellent responsiveness and superb power transfer, and is heat-moldable at 100°C for a precise personal fit. The low-cut design frees the ankle for fast derby footwork while keeping support where it counts, with an integrated microfibre liner, MYFIT derby techsole, and Dual Center Mounting plus standard mounting so it pairs with your choice of plate.Build your own skate: EU 36–47: boot only — DCM + standard mounting; plate, trucks, wheels and bearings sold separately Waxed laces plus a 45° Velcro strap lock your heel perfectly in place for intense derby action. Look: Black with silver glass-fiber weave Best for: Custom derby builds on your favourite plate Skill level: Intermediate to Advance Bonus: Heat-moldable carbon shell (100°C) · DCM + standard mounting · MYFIT derby techsole