Type A car can be used after the baby is 2 months old and the head can be supported; Type B car can be used after the baby is about 7 months old. No matter which style, it can be used until about 2 years old. The two types of cars have their own advantages. Type A is suitable for walking while Type B is suitable for taking trams or shopping.

The stroller is a kind of tool car designed for the convenience of infants' outdoor activities. There are various models. Generally, children aged 1 to 2 play with the stroller, while children aged 2 and above play with the toy car with wheels. The stroller will bring certain benefits to children's intellectual development and increase their brain development.