YBike Evolve is the ride-on toy to help kids learn to ride a bike. Coordination, balance, and confidence improve with each change of the YBike! Unlike most combination ride-ons, the Evolve system easily allows a parent to convert this from a classic style pedal Trike to a Balance Bike and ultimately to a more advanced Running Bike Adjustable seat allows the Evolve to grow with child. Designed for children 2-5 years. Weight Limit: 66 lbs.