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Safe in the Seat articles: Category

3-Across

Two children secured in purple and navy Britax car seats while a mother installs a Britax infant seat in a vehicle back row 3
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Choosing a Seat
3-Across

Best Car Seats That Fit 3-Across

See out list of the best 3-across infant car seats. Then, we’ll give you some tips to get a safe and secure installation on all these seats!
Michelle Pratt
September 15, 2026
Three slim convertible car seats installed side by side in a minivan: black Britax, tan Graco SlimFit3 LX, and gray Chicco
3-Across
Choosing a Seat

Best Slim Convertible Car Seats for 3 Across (2026 Guide)

Trying to fit 3 car seats across or maximize back seat space? Compare the best slim convertible car seats, plus how to choose the right one for your vehicle.
Lainie
September 15, 2026