Montague Navigator 21 Speed Folding Bike DirectConnect folding system connects front and the rear frame in one click Frame Size : 19" For riders 5'3" to 5'10" / 21" for riders 5'11" to 6'4" The Navigator is great for commuting, touring, all weather riding and unpaved surfaces This bikes comes with the NEW 4 in 1 RackStand: a Cargo Rack, Mud Guard, KickStand and Work Stand.