That's around age six
Look at www.wheelytots.com/kit
Dan. Would this be of interested. We had put it to one side for the immediate future thinking no one will be looking for a bike at this point.
It was my daughter's, and then my son's (thankfully he got over the flowery design).
Its in good nick, the brakes a re bit squeaky but that is just a function of them needing some oil around the center pin they pivot around.
Thanks Karl, I've sent you a connection request