New in box Uppababy lower stroller adapters, compatible with Mesa car seat, UB bassinet, and vista v2 stroller. Box is opened but have never been used. Instruction manual included. From the brand: These lower adapters allow you to attach a bassinet, Mesa Infant Car Seat or RumbleSeat V2+ (all sold separately) to the UPPAbaby Vista as a secondary seat.
 • Compatible with Bassinet, Mesa Infant Car Seat and RumbleSeat V2+ with Vista and Vista V2 strollers(all sold separately) • Large hubs ensure quick, no-tool attachment • Color-coded dot indicators to ensure proper installment • Stroller (sold separately) folds with the adapters on • Easy open-and-close mechanism with closure lock for ease of mind • Plastic