Uppababy RumbleSeat V2 Multi-Position Stroller Seat – Jake /Charcoal with Carbon Frame and Black Leather 

Attach this second seat to your Vista to accommodate two in tow. The RumbleSeat V2 can recline and be used forward and parent-facing. It’s the multitasking stroller seat you have only dreamed of.
•Suitable for children from 3 months to 35 lbs or 36?, whichever comes first
•Can be positioned forward and parent-facing
•Lower level seat
•Multi-position recline
•Numerous configurations possible with Toddler Seat, PiggyBack, and Mesa Infant Car Seat (may require additional purchase)
•Quick, no-tools attachment to and removal from Vista stroller with included adapters
•Five-point, no-rethread harness adjusts in a singular motion
•Extendable, zip out canopy with UPF 50+ for added sun protection
•Includes Bumper Bar and Bug Shield
•Snack Tray accessory fits bumper bar attachment
•Removable and washable fabric
•Suitable for 0 to 4 Years
•Master Box Dimensions : 25 x 41 x 80.5 cm