Kids frog bike 48 age 4, 5, 6 Pink Great Condition NOTTINGHAM. In great condition as you can see from the photos, there is just minimal wear as you’d expect from a used kids bike. Great first pedal bike. Chain and brakes are in good working order and safe. We still have the spare tyres and chain guard. This bike is designed for a child with an inside leg of 48-54cms usually from about 4 to 6 years old. Let me know if you want to come and look at it. I generally work from home. In Tollerton, NG12 4EB.