Here is our CamPingSurvivals 27.5in High Carbon Steel 100kg 21 Speed Mountain Bike. It is made of high-strength carbon steel material and can withstand a weight of up to 100 kilograms, ensuring the stability and safety of riding. This mountain bike is equipped with a 21-speed transmission system, allowing riders to easily cope with different road conditions and slopes and enjoy a smoother riding experience. At the same time, the black and yellow exterior design is fashionable and eye-catching. Whether on mountain trails or city streets, this mountain bike can bring cyclists ultimate fun and challenge. Whether it's daily commuting or outdoor sports, this mountain bike is the ideal choice. Take it home quickly and start your cycling journey!