A child can start to use a balance bike from around 18 months - 2 years old. The first thing to do is measure your child’s inside leg, from the sole of the foot up to the inside of the crotch. The minimum inside leg for our balance bikes is 30cm, and you can see our measurement chart here. Our pedal bikes are very slightly bigger than the balance bikes, and require a minimum inside leg measurement of 33cm. 12” pedal bikes can also be use from around 2 years old.