If you’re at all familiar with Graco car seats, you know they love to have confusing, similar names. With three versions of the SlimFit, plus 2 versions of the True3Fit LX, it’s important to understand which car seat models are the narrowest if you’re looking to fit 3-across in your back seat.

The Graco SlimFit3 LX 3-in-1 carseat is the industry standard when it comes to narrow carseats. Need to get 3-across in your back seat? It’s likely you turn to the SlimFit3 LX first. What makes it so great? We dive deep in our review to show you all the pros and cons so you can make an informed decision before you buy.