UPPAbaby Vista Lower AdaptersUPPAbaby's NEW VISTA allows for multiple second seat configurations. The Lower Adapter for VISTA creates more space between your primary and secondary seats. And the 2017 later version of the lower adapters adds an extra level of security than the 2015 model. Quick, no tools attachment Color coded dot indicators to ensure proper installment Stroller folds with the adapters on Compatible with VISTA 2015 or later and allows for attachment of Bassinet or