permanent children's bicycle boys medium and large children's mountain bike lightweight folding bicycle teenagers variable speed bicycle

camouflage green single speed spoke wheel + double disc brake + front and rear damper chinese red single speed spoke wheel + double disc brake + front and rear damper camouflage green variable speed spoke wheel + double disc brake + front and rear damper chinese red speed spoke wheel + double disc brake + front and rear damper camouflage green variable speed integrated wheel + double disc brake + front and rear damper chinese red variable speed integrated wheel + double disc brake + front and rear damper

18 inches 20 inches 22 inches