Manufacturer-sourced compatibility, checked pair by pair
Does This Car Seat Fit This Stroller?
Pick both halves of the travel system. The answer comes from the manufacturer's own chart, with the exact adapter named and the source dated. No guessing, and a no is published as plainly as a yes.
Browse the Compatibility Matrix
Every stroller and every seat in the dataset gets a hub with its full matrix. Start from the half you already own.
By Stroller
The seats each stroller takes, and the adapters between them
- UPPAbaby Vista21 seat lines
- Mockingbird Single-to-Double50+ seats claimed
- Thule Urban Glide 360 seats documented
- Baby Jogger City Select 28 chart entries
- Britax Juniper+15 seats, one adapter
In this demo the Vista hub is built in full. Every hub ships at launch.
By Car Seat
The strollers each seat fits, read from the stroller makers' charts
- Nuna PIPA LineMaxi-Cosi-style fitting
- Chicco KeyFit LineBrand adapter on most strollers
- UPPAbaby Mesa LineDirect fit on UPPAbaby frames
- Graco SnugRide LineNo maker-published cross-brand path
- Clek Liing and LiingoMaxi-Cosi-style fitting
Chicco and Graco publish no cross-brand charts of their own, so their seats are documented from the stroller side.
How a Verdict Is Earned
A pair earns a verdict only from the manufacturer's own documents. Retailer copy can point us to a chart, it can never create a verdict.
The Manufacturer's Chart Rules
Compatibility charts first, then the seat maker's own documents, then the adapter's product page. Every row keeps its source, its region and the date it was checked.
Four Answers, Never a Guess
Fits, fits with a named adapter, does not fit, or not listed. Not listed means no chart names the pair. It is never dressed up as a no, and never as a yes.
Rechecked on a Cadence
Adapter pages monthly, busy pairs quarterly, the full matrix twice a year. When a manufacturer changes a chart, the affected verdicts are rechecked the same week.
Pairs Parents Check First
From the pilot dataset. The full matrix, every stroller against every seat, ships at launch.
The most checked cross-brand pair in the pilot Fits With an Adapter UPPAbaby Vista × UPPAbaby Mesa
Clicks straight onto the frame Fits, No Adapter Britax Juniper × Any Infant Seat
Britax's chart is explicit, seat by seat Does Not Fit Mockingbird Single-to-Double × Mesa Max, Double Mode
Excluded by Mockingbird's own adapter page Does Not Fit
The Pilot Dataset, Counted
Ten brands extracted from manufacturer sources on November 1, 2026. These are counts from documents, not estimates.
835
Compatible pairings documented
93
Documented does-not-fit verdicts
84
Adapter products tracked by SKU
10
Brands in the pilot extraction