Patented design that allows the two rear wheels to be easily converted into a single double-width wheel for the balance bike mode. Easy steering thanks to the integrated steering system, adjustable TPR parent handle, large front canopy, and two rear parking brakes. Tool-free design for initial assembly and subsequent mode switching. Includes convenient storage for the pedals. Baby tricycle: 10 - 36 months, max 15kg. Guided tricycle: 18 - 36 months, max 20kg. Training tricycle: 24 - 36 months, max 20kg. Balance bike: 2 - 5 years, max 20kg.