Mongoose Kong Fat Tire Mountain Bike for Kids, 20-Inch Wheels, Blue Price: $271.18 (as of 06/23/2021 00:03 PST- Details) & FREE Shipping.

The suggested rider height range for this bike is 48 – 60″ tall and the frame size (seat tube length) is 13 inches
A Shimano rear derailleur with seven speeds makes hills easier to climb, while twist shifters make it smooth and easy to change gears while riding.