The best, lightest, most maneuverable tandem stroller available. At 21 pounds the Caboose Ultralight is 20% lighter than the original model and far lighter than most double strollers. The Caboose Ultralight includes the following features:Patented Stand On Tandem allows your toddler to sit or stand on the rear bench seat/platform. Parents really love the neoprene Parent Organizer. It has plenty of room to store your keys, cell phone, etc and the cup holder will help keep your drinks cool.