KENT Dual Drive Tandem Comfort Bike High-quality tandem bike with a durable cruiser-style frame 21-speed Shimano Tourney drive train and Revo twist shifters Easy-to-access stand-over heights (29 inches front and 20 inches rear) Extra-wide 2.1-inch tires; reliable alloy linear pull V brakes Pair of spring gel saddles and dual water bottle holders;Frame Size: 18" Front, 17" Rear & Wheel Size: 26"