Material: thick carbon steel frame high strength strong impact resistance safe and firm driving long service life easy to deal with different road conditions. Advantages: comfortable seat adjustable car seat height high-quality leather cushion thick sponge comfortable and non-slip Manufacturered by Axdwfd. Braking: front and rear safety brakes sensitive brakes fast heat dissipation safer driving auxiliary wheels thick wear-resistant layer. Safety: non-slip pedals adult pedals increase the pedaling area of the feet prevent the baby's feet from slipping safer riding and the closed chain design can effectively prevent clothes from being caught by the chain and prevent harm to the baby. 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 .