Yvolution Y Velo Twista Innovative wheel adjustment The rear wheels will move closer together, allowing the child to progress with their balance skills as they run and cruise Stage 1, Training mode, allows the bike's double rear wheels more separation to give toddlers extra stability as they learn to balance and ride Height adjustable seat and handle bars and shock absorbing tires As a child gets older and their motor skills advance, parents can easily switch to Stage 2, Balance Bike mode, using Yvolution's "Twist & Click" feature