The first bouncy step in a pair of Kangoo Jumps leaves people feeling like they’ll topple over for sure.
The Rollerblade-looking boots are mounted on top of a pair of elliptical-shaped springs. Too much of a step, and you’ll go bounding off balance. Too little, and you’ll stumble.
But after a minute, the legs adjust and you find your balance. Soon, you’re launching into the air with each step.