Replacement HX2 Heelys wheel kit designed for a pair of HX2 shoes. The HX2 series features Heelys with two wheels on each shoe.
Notice:
Small corresponds to Heelys sizes:11-5 (UK) / (29-36,5 EUR)
Medium corresponds to Heelys sizes: 6-7 (UK) / (38-39 EUR)
To determine the necessary size for your specific model, simply remove the wheel or plug from the shoe and inspect the markings found there.