Baby, English name pram, is the main kind of children's toys, including children bicycle, children stroller, baby walker, children tricycle four categories, 4 to apply the child's age range is 8 years old, with children's age and height of the purchase, choose the right size, the saddle height in 435 ~ 635mm within the scope of the bicycle, the purchase of vehicles should pay attention to the brake size, but also pay attention to buy baby stroller when viewing the age group identification, purchase the appropriate products according to the age of the child.