The size analysis of the bicycle is as follows:
1. The label shall be based on the wheel diameter. The 12 inch (" "), 16 inch, 20 inch refers to the diameter of the wheel, inch refers to the inch, each inch is equal to 2.54 centimeters, so the wheel diameter of a 16-inch bicycle should be 40.6 centimeters, the wheel diameter of a larger 29-inch bicycle should be 73.7 centimeters.
2. The label shall be based on the height of the frame. In addition to the bicycle model, which is based on the diameter of the wheel, there is another term that is based on the height of the frame. Frame height refers to the length from the bottom of the pedal to the top of the seat rod. The 15-inch bicycle under this label is usually suitable for children of 150-165cm height.
3. The bicycle model is mainly used to indicate the height of the bicycle, whether it is the diameter of the wheel or the height of the frame. Of course, taller bikes are usually longer and have wider handlebars.