UPPAbaby Lower Adapters For Vista V2/V3 Mesa Car Seat And Bassinet   The UPPAbaby Lower Adapters for Vista/Vista V2 enhance your stroller?s versatility by allowing multiple second seat configurations. Easily attach a Bassinet, Aria Infant Car Seat, Mesa Car Seat, or RumbleSeat V2+ as the secondary seat, making it ideal for families with more than one child.   Features Versatile Compatibility: Compatible with Bassinet, Aria, and Mesa Infant Car Seat (sold separately), offering flexible seating options. Secure Locking Mechanism: Features an easy open and close mechanism with a closure lock for added peace of mind. Convenient Folding: The stroller can still fold with the adapters attached for effortless storage. Color-Coded Installation: Simple color-coded dot indicators ensure proper and secure installation. Tool-Free Installation: Large hubs ensure a quick and easy attachment without the need for any tools.