Heelys come with one or two wheels in the heel so wearers can go from walking to rolling just by shifting their weight. The wheels are not retractable; they do not spin when a person's weight rests on the front of the shoe. The wheels can be easily removed, transforming Heelys into pedestrian sneakers.

Do all Heelys have retractable wheels?

The wheels are easy to put in and easy to take out. You can wear your Heelys without the wheel and they look and function just like any other shoe. Heelys do not have retractable wheels – shoes that have retractable wheels are NOT made by Heelys.

Why are Heelys bad for you?

They found 67 children suffered orthopedic injuries while using Heelys or Street Gliders, such as broken bones or dislocated joints. Girls were much more likely to be injured than boys, and the average age of injured children was just under 10.