Our VISTA allows for multiple second seat configurations. The Upper Adapter for VISTA, VISTA V2 and Vista V3 creates more space between your primary and secondary seats. Quick, no-tools attachment Color coded dot indicators to ensure proper installment Stroller folds with the adapters on Compatible with VISTA models 2015+, VISTA V2, VISTA V3, Bassinet models 2015+,Toddler Seat and Aria and Mesa Infant Car Seat (not included).