Do you know that 90% of cycling injuries are caused by incorrect ride on toys bike size when a child tiptoes to ride and falls crying? Three-step method for precise matching: 1. Measure height to determine wheel diameter: 80-120cm for ride on toys 12-inch, 105-135cm for ride on toys 16-inch, >135cm for ride on toys 20-inch. It is safe only when both feet can fully touch the ground during test riding. 2. Check three safety elements: CCC certification mark, fully enclosed chain guard to prevent foot pinching, 560mm saddle height requires a coiled chain guard, dual V-brakes with 50N braking force, reliable with one pinch to stop immediately. 3. Avoid idleness and cleverly extend use: Choose adjustable handlebar and seat post, use for 2 more years to save 1,000 yuan. Magnesium alloy frame ride on toys, 30% lighter, easy to escape when falling. Tip: Safety radius is one adult arm's length, please spread your arms when supervising.

