
A RumbleSeat or a second bassinet for a second child, and a PiggyBack board for a third.
What you need
- Second seat: a RumbleSeat. It brings its own adapters in the box, and the seat on top goes on the Vista upper adapters.
- Second bassinet: needs the Vista upper and lower adapters.
- Mesa capsule underneath a toddler seat: uses the Vista upper and lower adapters, the same as a bassinet. The toddler seat on top goes on the UPPAbaby Vista Upper Adapter and the Mesa on the UPPAbaby Vista Lower Adapter.
- Another brand's capsule: on top it needs the Vista and Cruz car seat upper adapter, and underneath it needs the UPPAbaby Vista Lower Infant Car Seat Adapters. Only approved models fit, and every approved model fits underneath.
- Third child: the PiggyBack board clips to the rear axle and takes a standing child to 25 kg.
Find your parts
More than thirty configurations come off the one frame. Pick your pram and what you want to attach on the Which adapter do I need? page and it will tell you which part, if any, you need.
Good to know
The Cruz takes one seat The Cruz does not take a second seat or a second bassinet. It does take the Cruz PiggyBack board for an older child to stand on.
Still need help?
Lodge a request and our Melbourne team will reply within one business day. Include your receipt, a photo of the serial number label and photos of the problem.
More on uppababy.com.au
Information from uppababy.com.au, checked 1 October 2026.
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