E-250

Age: 2-5 years  |  Height: 33-40 inches  |  Ability level: Learning to ride their first bike

E-350

Age: 4-6 years  |  Height: 37-46 inches  |  Ability level: Able to ride or ready to ride

E-450

Age: 5-9 years  |  Height: 43-57 inches  |  Ability level: Able to ride, developing major skills.

E-510 / E-540

Age: 7-11 years  |  Height: 51-63 inches  |  Ability level: Able to ride, developing major skills.