The UPPAbaby CRUZ is a single stroller and cannot convert to a double stroller.
Although you cannot add a second seat to the UPPAbaby CRUZ, you can use the CRUZ with two children by adding a Piggyback ride-along board that allows an older toddler to stand behind the stroller.
If you're looking for an UPPAbaby double stroller, consider the UPPAbaby VISTA, which converts from a single to a double with the addition of a second seat, or the side-by-side double umbrella stroller, the UPPAbaby G-LINK 2.
See this UPPAbaby VISTA vs. UPPAbaby CRUZ comparison to learn more about the differences between the two strollers.
Shop the UPPAbaby CRUZ collection below!