Created exclusively for the Caboose Stand-On Tandem and the Big Caboose Stand-on Triple Stroller, this organizer includes a cup holder, plenty of storage space and a zip close pocket all wrapped up in a classy and functional neoprene design. Perfect for your water, keys, cell phone, iPod, etc. The Joovy Caboose Stand-On Tandem and Joovy Big Caboose Stand-on Triple are sold separately.