The all-in-one baby tricycle is for toddlers aged 10 months+ and the balance bike is for kids aged 2 to 5 years, for maximum product usage. Toddler tricycle adapts as your child develops with Infant Trike (10-36M), Guided Trike (18-36M), Training Trike (24-36M), and Balance Bike (2-5Y) included. Patented wheel mechanism easily allows you to turn the toddler trike into a kids balance bike without the need of any tools, for a fast and simple product transformation. Its a safe toddler tricycle for boys and girls, thanks to the 5-point safety harness with soft, comfortable shoulder pads, kids footrest, high-back seat, and safety bar (Infant Trike mode).