This bike can help children quickly master riding skills under safe conditions. The 18" wheels are not only non-slip but also adaptable to different roads. Two auxiliary wheels can improve the overall stability of the bicycle. In order to keep up with the growth rate of children, we designed the auxiliary wheels to be detachable to meet the different needs of children of different ages. In addition, we strictly select high-quality carbon steel materials to ensure the durability of the bicycle. The adjustable handlebars seat grows with your child, quick release seat for easy height adjustment, you will get a custom seat height. The enclosed chain guard prevents ankles from catching. Simply pedal backward, the kid's bike will stop. Exercise is the nature of children, and cycling can promote children's sports. Perfect for the kid's gift, children will love this bike very much.