primary and secondary school students variable speed mountain bike 7-15 years old middle and big boys and girls learning car disc brake youth bicycle

pink standard edition + single speed + brakes pink top version + single speed + brakes + bicycle basket rear rack white powder standard edition + single speed + brakes white powder top version + single speed + brakes + bicycle basket rear rack dazzling blue standard edition + single speed + disc brake colorful blue top with version + single speed + disc brake + bicycle basket rear rack fresh green standard edition + single speed + disc brake fresh green top with version + single speed + disc brake + bicycle basket rear rack white and blue standard edition + single speed + disc brake white and blue top with version + single speed + disc brake + bicycle basket rear rack white standard edition + single speed + brakes white top version + single speed + disc brake + bicycle basket rear rack colorful pink standard edition + single speed + disc brake colorful pink top version + single speed + disc brake + bicycle basket rear rack black and red top version + variable speed + disc brake + bicycle basket rear rack white top version + variable speed + disc brake + bicycle basket rear rack white and blue top with version + variable speed + disc brake + bicycle basket rear rack colorful pink top version + variable speed + disc brake + bicycle basket rear rack fresh green top with version + variable speed + disc brake + bicycle basket rear rack white powder top version + variable speed + disc brake + bicycle basket rear rack black basket top version + variable speed + disc brake + bicycle basket rear rack colorful blue top with version + variable speed + disc brake + bicycle basket rear rack black shock absorber disc brake integrated wheel green damping disc brake integrated wheel

18 inches (suitable for height 110-135cm) 20 inches (suitable for height 125-145cm) 22 inches (suitable for height 135-155cm) 24 inches (suitable for height 145-170cm)