Slim Seats

A narrow booster can make buckling next to another car seat easier. The Peg Flex 120 is both narrow and does not have armrests, leaving more space for reaching the seat belt buckle. The Chicco KidFit is relatively slim and offers a belt buckle cut-out for easier buckle access. 

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All infant car seats are relatively slim. If you need to fit adjacent car seats, the convertible car seat width is more important! Something to consider is that a seat belt installation will provide the most room. A rigid-lower-anchor-baseless seat may not be the best choice because it optimizes a lower anchor install, not seat belt. If a baseless seat fits your lifestyle best, consider using one with an optional base like the Graco GoMax or Joie Mint Latch with base anti-rebound.

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The Graco SlimFit3 LX 3 in 1 and Chicco Fit3X are the most narrow and versatile options measuring in at 16.7" wide. Other narrow seats like the Britax Poplar or Romer Veni (17") can be excellent choices as well.

Yes, with the right car seats in most vehicles! (link to three-across article).

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Car seats can range from just under 17" to over 21" wide. Those extra 3-4" (times 3) make a huge difference when fitting seats next to each other. Slim car seats are not a downgrade in safety, they are simply designed differently to fit next to another car seat or person.

The Evenflo Revolve360 Slim is a very narrow seat! At only 16.9" it can fit three across in most vehicles. In many three-across setups, however, it cannot rotate fully. It may spin outward for easier middle seat access, but unless there is a narrow, low-profile forward-facing car seat next to it, it likely cannot spin toward you to load a child. In a vehicle with a wider bench (full size SUVs, VW Atlas, Honda Pilot, and Ford F150, etc.) it will rotate fully or nearly fully for easy loading.  

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