About us

Grewbik was born from a simple but frustrating everyday situation. As a parent of two, I realized one day that our storage room was already full of bikes - and my son was only four years old. I started to wonder: How many bikes will we accumulate before he turns ten? Do we really have to squeeze through old bikes every time we go to get winter clothes or park the car in the garage?

That's when the idea behind Grewbik was born - a bike that grows with the child. Instead of buying five different bikes during their childhood, a smart, adjustable bike that covers five different sizes in one frame is enough. The bike is easy to adjust to the child's height and age - without any special tools. It's better for the wallet, easier for the family and good for the environment.

The journey began with sketches on paper, then digital models in the 3D program Fusion and countless prototypes in the 3D printer. Step by step, we developed a sustainable and functional design that has now become a reality.

Today we are in the final stages of product development. We are preparing to launch our first series of bikes, and right now our prototypes are undergoing the final safety tests and certifications. Once approved, we will start delivering bikes between April and June 2026 to everyone who pre-ordered - and to those of you who want to be part of it from the start.

Grewbik is more than just a bike - it's a solution to a problem that many parents share. And our journey has only just begun.