Royalbaby Cube Tube Kids Bike, 12-14 - 16-18 inch Wheels Frame/Fork: Unique square-tube frame with various fashionable colors; unisex design suitable to both boys & girls Wheels/Tires: RoyalBaby patented 2.4 wide tires ensure high riding stability Drivetrain: Single speed with one piece crank Brakes/Cockpit: Front handbrake and Quando coaster brake provide double safety; child-size brake lever with short reach; newly-developed foam saddle, TPR soft grips, non-slip pedals with reflectors Includes: Bell, assembly tools, designer frame pad and HEAVY DUTY training wheels