*Returns not accepted on any opened, used, or defective product. Contact manufacturer customer service directly for defective products/parts. From UPPAbaby, these stroller adapters feature: Our VISTA allows for multiple second seat configurations. The Lower Adapters for the VISTA allows you to attach a Bassinet or the MESA car seat to the VISTA as the secondary seat. Quick, no-tools attachment Color coded dot indicators to ensure proper installment Stroller folds with the adapters on Compatible with Bassinet and MESA Infant Car Seat (not included) Imported.