mountain bike 8-15 years old mountain bike 21 speed disc brake variable speed bicycle children bicycle bicycle children

black integrated wheel deluxe edition blue integrated wheel deluxe edition orange integrated wheel deluxe edition black spoke wheel deluxe edition blue spoke wheel deluxe edition orange-yellow spoke wheel deluxe edition black integrated wheel standard blue integrated wheel standard orange integrated wheel standard black spoke wheel standard blue spoke wheel standard orange spoke wheel standard

[18 inches] suitable for 115-135cm height [20 inches] suitable for 125-145cm height [22 inches] suitable for 135-155cm height