The Britax One4Life Slim ClickTight All-in-One car seat has a mile-long list of features: a robust ClickTight belt-tensioning lockoff panel, a top harness slot height higher than most harness-to-booster seats, a top shoulder belt guide higher than most dedicated belt-positioning booster seats, flame retardant-free machine washable fabrics, and more! What else could we talk about in our review? Plenty.

Boasting tall harness slots, a narrowness that works in many 3-across situations, a robust ClickTight installation system, and naturally flame-retardant fabrics that are machine wash- and dryable, the Britax Poplar and Poplar S convertible carseats seem to be perfect. But nothing is that perfect, right?

The Doona Car Seat & Stroller took the carseat world by storm when it was introduced. For parents living in large cities and relying on taxis and rideshares, the Doona is a total game-changer: there’s no need to drag around an extra piece of equipment, whether it’s a stroller or a carseat. But does convenience come with a price?

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.