[Steel frame made] The bicycle is made of carbon steel frame and the front fork and the middle frame are designed for comfortable shock absorption. The bicycle size is 120X20X50 cm. [Front and front brakes] Front and rear brakes high sensitivity fast stop safer driving. Manufacturered by Qi Peng. [Adjustable Seat] The seat can be adjusted to accommodate children or adults of all ages. [Scope of application] Most assembled road bikes are ideal for beginners and enthusiasts who ride bicycles. [Premium material] Lightweight and sturdy 20-inch 22-inch aluminum alloy wheels for comfortable shock absorption smooth cruising and easy riding.