Material: thick carbon steel frame high strength strong impact resistance safe and firm driving long service life easy to deal with different road conditions. Features: environmentally friendly rubber no odor safer to use thicker tires non-slip and wear-resistant and more stable riding. Manufacturered by Axdwfd. Advantages: comfortable seat adjustable car seat height high-quality leather cushion thick sponge comfortable and non-slip Braking: front and rear safety brakes sensitive brakes fast heat dissipation safer driving auxiliary wheels thick wear-resistant layer. This sporty bike for boys and girls comes with training wheels and a quick release seatpost which makes it easy to adjust the height of the seat .