Dear Sir Madam, Type:Kids' Bike Wheel Size:12" Frame Material:Steel Fork Material:Steel Rim Material:Aluminum Alloy Product name:children bicycles Brake:Disc Brake Tire:Air Tyre Style:Ride Saddle:Comfortable Pedal:Alloy Pedals Handlebar:Aluminium Alloy Handlebar Color:red, green, yellow Age:3-8 Years old Size:12" 14" 16" 18" 20"