-Schwinn mountain bike frame with Schwinn suspension fork for controlled riding on tough trails -Twist shifters with 21-speed rear derailleur for quick gear changes on the trail -Front and rear alloy linear pull brakes provide secure stopping power -All-terrain, wide knobby mountain tires sit on light and durable alloy wheels for added stability -Alloy crank offers optimal gearing and less maintenance -The Schwinn High Timber is ideal for riders who want to take on a variety of terrain. The steel or aluminum frame optionsoffers durability for those tough courses. The wheels feature alloy rims for lightweight strength and all terrain tires. And like all Schwinn bikes, the High Timber comes with a limited lifetime warranty for as long as you own the bike. From pavement to trails, get out and ride with the High Timber. Enjoy the freedom of riding a Schwinn.Schwinn High Timber Youth/Adult Mountain Bike, Aluminum and Steel Frame Options, 7-21 Speeds Options, 24-29-Inch Wheels, Multiple Colors