... scooter,tango scooter,zip scooter ,frog scooter,frog kick scooter,tri scooter,tri-scooter,kick scooter,three wheel scooter,sliding tricycle,zip slide scooter ,tango 3 wheel scooter,3 wheel swing scooter ... will let its safety & speed control advanced greatly.It is folding and adjustable of height, user can carry it easily.