[High performance and high quality]: Lightweight and sturdy high carbon steel frame and high-quality front fork, with comfortable shock absorption performance, bringing smooth cruising and relaxing riding experience. [21 SPEED]: 21 Speed Shifting system MTB Bicycles specifically designed for Adult and Student, you can easily choose any speed,so you can easily go on the road. [Suitable for the Crowd]: Lightweight, durable, and portable. The streamlined frame was designed to suit students, office workers, both men or women, in an urban environments for commuting to and from work.