The Core Performance 90 – 11.25 frame has been created to bring amazing quality and performance at the best price. The flat sidewall will bring direct power transfer to help kids reach an efficient push. The upper, wider part of the frame will upgrade their stability level and they will learn to control edge to edge faster. The 11.25″ size of this 2in1 speedskating frame allows the kids to choose between a 3x100mm or a 4x90mm setup to be able to respect the rules of the federation. This 6061 aluminum extruded and CNC machined frame hasnt just the look of a professional high-range product, indeed it is a top frame that is comfortable to skate.