children's bicycle boys and girls adult middle and big children primary school students 6-8-10-12-15 years old variable speed new mountain bike

shock-absorbing dual disc brakes [single speed] light pink + standard model shock absorption double disc brake [single speed] white orange + standard shock-absorbing dual disc brakes [single-speed], black and red + standard model shock-absorbing dual disc brakes [single-speed], black and blue + standard model shock absorption double disc brake [single speed] black green + standard shock-absorbing dual disc brakes [single speed] light pink + deluxe model shock absorption double disc brake [single speed] white orange + luxury shock-absorbing dual disc brakes [single-speed] in black and red + deluxe model shock-absorbing dual disc brakes [single-speed] in black and blue + deluxe model shock absorption double disc brake [single speed] black green + luxury shock absorption double disc brake [single speed] light pink + high configuration shock absorption double disc brake [single speed] white orange + high configuration shock absorption double disc brake [single speed] black red + high configuration shock absorption double disc brake [single speed] black blue + high configuration shock absorption double disc brake [single speed] black green + high configuration shock-absorbing dual disc brakes [variable speed] light pink + standard model shock absorption double disc brake [variable speed] white orange + standard shock-absorbing dual disc brakes [variable speed] black and red + standard model shock-absorbing dual disc brakes [variable speed] black and blue + standard model shock absorption double disc brake [speed change] black green + standard shock-absorbing dual disc brakes [variable speed] light pink + deluxe model shock absorption double disc brake [variable speed] white orange + luxury shock-absorbing dual disc brakes [variable speed] black and red + deluxe model shock-absorbing dual disc brakes [variable speed] black and blue + deluxe model shock absorption double disc brake [variable speed] black green + luxury shock absorption double disc brake [speed change] light pink + high configuration shock absorption double disc brake [speed change] white orange + high configuration shock absorption double disc brake [speed change] black red + high configuration shock absorption double disc brake [speed change] black blue + high configuration shock absorption double disc brake [speed change] black green + high configuration [magnesium alloy integrated wheel] light pink + variable-speed high-end version [magnesium alloy integrated wheel] white-orange + high-end with variable gears [magnesium alloy integrated wheel] black and blue + high-end with variable gears [magnesium alloy integrated wheel] black and red + high-end with variable gears

18 inches [suitable for heights 115–130 cm] 20 inches [suitable for heights of 125–140 cm] 22 inches [suitable for heights of 140–155 cm] 24 inches [suitable for heights of 150–170 cm]