These bikes/scooters are great! We bought these for our not quite 2 1/2 year old twins for Christmas. They used them as bicycles while learning to balance, and now we're swapping them back and forth (which is easy to do). They just turned 3 years old and usually prefer them in scooter mode at this point. We bought them to burn energy around the house and they are perfect. SILENT wheels don't damage our hardwood floors or drive us crazy! They really helped them with their balance and now they can ride two wheel balance bikes with ease. We are so glad we bought them. Highly recommended!