If your older one isn t quite ready for the bench seat or stands on the platform of the caboose tandem stroller don t sweat it. Just grab a rear seat accessory to make sure they re as comfy as can be. The seat is Reclinable available in 6 colors made for kids up to 2.5 years old and has a five-point harness. This rear seat accessory is compatible with: Joovy Caboose Tandem Stroller Joovy caboose ultralight tandem stroller and Joovy big caboose ultralight stand-on triple stroller.