We’ve seen sneakers that are designed to grow with your child, so why apply that concept to your kid’s bike? It’s a great idea, because kids outgrow everything, forcing you the parent to shell out more money for something else they can outgrow.

Why not have one bike that can grow with your kid? That’s the idea behind this conceptual bike that designers at Kilo Design are working on. The bike expands along the sizes needed for kids aged 6 to 12. That’s six years of never having to replace a bike.

It’s a common parental problem. Your kid asking for a new pair of shoes every few months, because he has outgrown the old ones. Expensive too. You could take a cue from China and their women, and force your child’s feet to remain small forever by cramming them into a tiny shoe, but that only gets child services involved.

These shoes grow with the growing foot size of your child. Dubbed the INCHworm, they use iFit technology, with accordion-like material on the toe. With the press of a button it can be pulled out to increase the length of the shoe in ½ size increments up to 3 full sizes. Pretty sweet huh? It’s designed tough so all those days at the playground won’t destroy them.