The Schwinn GTX-2 700c Dual Sport Bicycle is fast on-road and still dependable off-road. Large diameter tires and the aluminum dual sport frame provide stability in a comfortable riding position. Quality Schwinn Features include; ? Scwhinn Aluminum Dual Sport Frame with Schwinn Suspension Fork for controlled riding; ? Shimano 21 Speed Trigger Shifters with Shimano rear derailleur for fast and easy gear changes; ? Alloy linear pull brakes stop precisely; ? Schwinn Crank offers a wide range of gears; ? Alloy Rims are light and durable; ? Quick Release Saddle for easy height adjustment