GNJINX 26" Mountain Bike with Front/Rear Disc Brakes, Twist Shifters, and 21-Speeds - Ideal for Off-Road Adventures Carbon Steel Bicycle Blue/White

• 【Healthy Living】Compared to traveling by car, cycling can help you exercise. It not only helps you to strengthen your muscles and bones but also helps you to lose weight effectively and have a healthy body! 【Environment Friendly】Traveling by bike does not require fuel or gasoline and does not produce harmful gases during the ride, making it an environmentally friendly way to travel. In other words, it also does not incur additional costs and is economical and affordable. 【21-Speed Bike】Its main wheel has 3 discs and the driven wheel has 7 discs, you can choose to hang on different discs of the main and driven wheels to get 21 different speeds to facilitate your ride. 【Precision Shifting】It has a precision shifting front and rear chainstay that gives you precise shifting for different terrain. The precision 21-speed mountain bike gives you a smooth shifting experience. 【Strong Load-bearing Capacity】Its triangular frame design and thickened and thickened tube type make it have a good weight-bearing capacity of 120kg/ 264.55lbs. 【Adjustable Saddle Height】Its saddle can be adjusted between 80-95cm/ 31.5-37.4in, so you can adjust the height according to your comfort.