This is a replacement protective rubber front bumper for your quad roller derby skates. The Hybrid bumper only fits on Hybrid boots that originally came with a bumper, not the earlier Hybrid version with laces to the toe. The protective bumper comes as a set of two bumpers (left and right). 

Use a hair dryer to make the rubber warm. Slowly peel off the old rubber bumper. You may need to reheat the rubber multiple times to get the whole of the bumper off. Use Loctite 401 or similar to then attach the new bumper to the boot. 

Size

• S (kids 13/31 - 3.5/35.5)
• M (4/36 - 7.5/40)
• L (8/41 - 13/50)