Manufacturer may substitute components with components of equal or greater performance level Features: Youth balance bike designed to help young kids learn to ride by putting the focus on balance and gliding before they graduate to a pedal bike Aluminum frame and parts offer lightweight durability Air filled tires provide grip and control for a ride that feels just like a real bike Ball bearing headset and wheel hubs deliver quality performance Quick-adjust seat makes it easy to adjust the height for growing kids 12-inch wheel fits riders 28 - 38 inches tall NOTICE: Used Bikes and/or bikes purchased online that have been assembled are non-returnable. We strongly recommend that a professional bicycle mechanic properly assembles, repairs, and maintains the bicycle. DICK'S Sporting Goods will provide free in-store assembly service by a certified technician for any bicycle purchased on our website or in our stores (proof of purchase required). If you choose to assemble the bicycle yourself, DICK'S Sporting Goods is not responsible for injuries or damages resulting from improper assembly.