This answer is for the Mockingbird Single Stroller 2.0, though one maker didn't say which version.
Key specs
Adapter
about $50
Weight with carrier
36.9 lb
Seat rated to
35 lb, 32 in
On planes (FAA)
Yes
Stroller folded
33.5 x 25.5 x 16 in
Good to know before you click it on
UPPAbaby Mesa Max and Aria do not work in twin setups (two car seats); Mesa, Mesa V2 and Mesa V3 do.
Any seat model not named in Mockingbird's chart is not compatible; the chart covers full-size strollers only (not the Travel Stroller).
About this pair
The UPPAbaby Mesa Max goes on the Mockingbird Single Stroller 2.0 with the Mockingbird Car seat adapter for UPPAbaby seats (model PD_SA_16_4), about $50. With the carrier on, you are pushing about 36.9 lb (27 lb stroller, 9.9 lb carrier). The seat itself is rated up to 35 lb and up to 32 in, per UPPAbaby.
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24 other infant seats fit the Mockingbird Single Stroller 2.0.
Summary from the makers' published data.
How to set up the UPPAbaby Mesa Max on the Mockingbird Single Stroller 2.0
What you need
The Mockingbird Single Stroller 2.0
The UPPAbaby Mesa Max carrier (its car base stays in the car)
The Mockingbird Car seat adapter for UPPAbaby seats (model PD_SA_16_4)
Step by step
1Set the brake and take the stroller seat off (press the white buttons on both sides and lift).
2Line up each adapter with the left and right joints, with the side that has the hole facing inward.
3Push the adapters into the joints until they click, then pull up on each to check.
4Place the car seat facing the handlebar onto the adapters until it clicks.