Designed with 24-inch wheels, this bike fits riders ages 8 and up, or 56 to 66 inches tall. Steel mountain-style frame and front suspension fork provide a durable, reliable ride. 21-speed trigger shifters make it easy to adapt to your terrain. Front disc brakes and rear V-brakes deliver crisp all-condition stopping. Light and strong alloy rims add durability without weighing you down. Alloy mountain crank means less pesky maintenance on your end. Tool-free adjustable seat post makes it easy to find a comfortable fit. Includes limited lifetime warranty for as long as you own the bike.