3-in-1 BALANCE BIKE: Designed for young children, the YBIKE Evolve will help your little ones develop early valuable motor skills and transition to a normal pedal bicycle when they are ready. ADAPTABLE: Easily change the Evolve to a no-pedal two-rear wheel balance bike for initial stability and ultimately convert to a single rear wheel for a more advanced running bike. SKILL DEVELOPMENT: Use the YBIKE Evolve to boost skill development and teach young children pushing, steering, coordination, and motor skills. Suitable for indoor and outdoor use. FEATURES: Adjustable saddle height, quick release lock on pedals, aluminum main frame, composite rear stays, injected composite wheel core, rubber grips, and injected molded plastic seat.