The easy-to-ride Massimo Kids' 150W E11 Electric Balance Bike is the perfect balance bike for kids between 3 and 7 years old. With an adjustable seat height from 11 in. to 17 in., and supporting riders up to 100 lb., the E11 is fun for a wide range of sizes and experience levels. Features a 150W hub motor with a speed up to 9 miles per hour and an extended range battery serving up 9 miles of smiles. The Massimo E11 weighs 19 lb. and has a lightweight alloy frame with a hub motor built into the rear wheel for increased gyroscopic stability. Hello Future Motocross Rockstars, Tiny Two-Wheeled Terrors and America's Next Top Stuntwoman. The E11 was made for this. Whether riding around the neighborhood or heading to the park, this kids' electric bike is sure to get you where you need to go.