Capacity: 22 – 65 lbs. in harness, 30 – 100 lbs. as high-back booster, 40 – 120 lbs. as backless booster

Why We Like It: For parents whose children have outgrown their infant car seat and are looking for a booster that can grow with them through the years, the Graco Nautilus 3-in-1 may be the perfect option. Graco has taken the Argos and the Nautilus and merged them into one seat, complete with the features we loved in both. This quality seat offers the versatility of three seat styles in one, which is why this car seat is consistently a top-seller.

First on our list of reasons why we like the Nautilus 3-in-1 is the capacity. Younger and smaller children will be able to fit comfortably in a harness that can hold up to 65 lbs., meaning your child can be protected longer. The booster position can be used up until 120 lbs., and the back can be raised to five different heights, ensuring it will fit most children through the elementary years.

The Nautilus also offers parents peace of mind with several key safety features, like a lock-off for using the vehicle’s belt and reinforced steel to effectively deflect the energy sustained in a crash. Key convenience features, like a new non-threading harness and the ability to adjust the seat’s height with one hand, are another part of what makes the Nautilus one of our favorites.

Graco also considered comfort when designing this seat. The Nautilus 65 LX offers three different reclining positions, something that is not available in every booster. The new version of the Nautilus also has a Fuss-Free Harness, which features pockets to hold the buckle tongues of the harness so you can easily move it out of the way once your child has outgrown it.

Cons: Some parents complained that, despite the seat’s reclining capabilities, their child still had a hard time sleeping in the seat. This isn’t true for every child, but if you think your child will need to spend a lot of time asleep in their seat, then this is something to consider.

Overall, the Graco Nautilus 65 3-in-1 Harness Booster is a great option for parents looking for a seat to last from the toddler years through elementary school.