mountain bike 26-inch bicycle 24-inch mountain bike 21-speed mountain bike adult off-road vehicle student bike 山地自行车26寸自行车24寸山地车21速山地自行车成人越野车学生车

[white and red] 21-speed standard edition [white blue] 21-speed standard edition [black and red] 21-speed standard edition [black blue] 21-speed standard edition [white and red] 21-speed deluxe edition [white blue] 21-speed deluxe edition [black and red] 21-speed deluxe edition [black blue] 21-speed deluxe edition [white and red] 24-speed deluxe edition [white blue] 24-speed deluxe edition [black and red] 24-speed deluxe edition [black blue] 24-speed deluxe edition [white and red] 27-speed deluxe edition [white blue] 27-speed deluxe edition [black and red] 27-speed deluxe edition [black blue] 27-speed deluxe edition

[24 inches] suitable for 145-170cm height [26 inches] suitable for 155-180cm height