Sneakers with wheels attached to them have been around in one form or another for many years, but Heelys new Hx2 series ups the ante. This pair of sneakers comes with two removable wheels in each shoe, so that it’s idea for younger wearers who are still learning how to skate. Once they’ve gotten the hang of it, Heelys Hx2 can then be converted into a regular, more challenging pair of Heelys just by removing one of the wheels. Heelys Hx2 will be available starting mid-July for around $54.99.