UPPAbaby MESA i-Size Infant Car SeatBetter Together. For the ultimate in portability and safety, the Mesa i Size directly attaches to both the Vista and Cruz pushchairs. It is even compatible with the Ridge and Minu with the addition of convenient adapters. This creates a stylish and simple solution that goes from drive to stroll (and back again). Just Click + Go! A quick press of the button on the top of the carrier handle releases it from the frame so you can go from pushchair to car