These fun shoes have retractable wheels—one per shoe. When the wheels aren’t in use, they are pushed up into the shoe’s heel by way of pressing & holding down the button on the back of the heel until it clicks. A little hatch “door” slides over the opening to keep the wheel safely inside the sole. Sliding the “door” open and closed takes a bit of muscled effort btw. To use the wheels, push them up into the sole until they release and flip down. The shoes’ flashing lights are triggered by impact.