Retrospec Cub Kids Balance Bike No Pedal Bicycle Critical Cycles Cub balance bike cultivates confidence in children learning balance and bike riding with its foot-to-floor and step-thru frame design Extremely safe design reduces risk of injury common on tricycles and training wheels Improves balance and coordination at crucial developmental stages, enabling a Seamless development towards a pedal bike Maintenance-free, Worry-Free, Minimal assembly, air-free tires never go flat, CPSC compliant to ensure your child's safety Fits children from 20 months to 5 years old with adjustable seat posts and handlebars