Nuna AACE Flame-Retardant Free High Back Belt Positioning Booster Car Seat - Lagoon

This seat is beautiful and extremely comfortable to use. It installs easily and is lightweight enough for a child to carry. Great addition to the car!

Love this seat! We went from the Nuna Rava to this, and its just as amazing as the Rava! So easy to install and very comfortable. Also feels very secure and safe! Highly recommend!

Seat is very easy to install, fairly light weight and my child says it’s very comfortable

We love this carseat. We have two other children who will soon be tall enough for this seat and we fully intend to buy this seat again for both.

Very comfy for long trips. So easy to get in and out of cars.

I got this seat for my tall four-year-old that still needs full back support but is getting too tall for the standard convertible car seats. Aside from saftey the main postive of this car seat is comfort. This seat is able to recline which allows for naps on long car trips comfortably. My daughter loves this seat, and I ended up getting one for both of my cars. It is also very easy to transfer to different cars. The only negative is the cup holder. It's a little bit on the small side and when my daughter pulls her drink out it tends to pull the entire cup holder out. Also, this seat is roomy and comfortable, which also means bulky, would be hard to fit three seats across a standard row.

Love this booster!!

It’s much better than the other brand car seat, but the click handles are small and not super easy to reach.

Simple and works just like all other Nuna products. High quality and easy to use/set up. Review about the cupholder may be a little off. We use the kids Camel Bak bottles and they fit perfectly in the cupholder.

My favorite high back booster ever! Easy to install, lightweight, and not bulky at all.

My two adult daughters love these car seats and boosters. Both of my grands (4 and 6) can jump into the car, scramble into the 3rd row seat and buckle up by themselves. The seats are comfortable and clean up well,, too.

This is a perfect carseat for my 4 years old boy, it is easy to be assembled and cleaned, with a high quality, I would like recommend this to you all.

Booster arrival as described. No issues with installation and has been comfortable for child. Would recommend purchase..

Beautiful color and comfortable for my child, this booster seat is easy to use and secure.

Very happy with this purchase! It is a very hefty and comfortable seat that has made entry and exit from car even easier for my 5 year old.

Its a pricey seat compared to big box stores - but for FR free, through and through (not just certain parts) there is an expense. Fortunately I use Albee Baby's rewards program over the years and it has saved me a bundle.

I came to the site to buy a second one of these for my husband's vehicle.

7 year old is very comfortable in his Aace

my favorite car seat

Absolutely love everything about this seat!

After extensive research, I purchased the Nuna AACE for my 5yo, who is in the 95th percentile for height.

What I like:
- tall 5yo is very comfortable in it, as is my petite 8yo.
- It will fit both of them for a long time (big reason for splurging for this seat)
- the seat pan can be lengthened as they grow, not just the shoulder space and head rest.
- rigid latch, and comes with latch guides - in our car, the LATCH bars are difficult to reach and the guides are VERY helpful!
- flame-retardant free fabric
- seat belt is a good fit on both kids (and is rated best bet for belt fit in any car by the IIHS)
- can be used without a vehicle headrest
- can be reclined for comfort when sleeping (not just vehicle seat fit)
- when my 5yo has fallen asleep in it, the seat keeps him upright and belt path remains optimal

What I don't love but aren't deal-breakers:
- upper seatbelt guide could be tighter/harder to undo - in our car at least, the belt gets twisted and comes out when unbuckled with almost every ride
- rigid latch is rigid, but has a hinge that makes it slightly less easy to line up with LATCH than our other boosters
- no metal in the frame (I know this is isn't necessary and asking for it is probably overkill, but it would still make me feel better!)
- the headrest connection has a lot of give when extended. While the manual states that the AACE can be used without a vehicle headrest (another reason I got it - our old car does not have them in the back seat), it doesn't feel sturdy to me without something behind it.

That being said, though I haven't found *the* perfect booster yet for my family, I like the AACE better than the other two seats we have, which are Peg Perego Flex (for travel) and Clek Oobr. In the Flex, both kids say because the headrest is so thick, it pushes their heads forward, though it's great for folding up and taking on a plane (it has to be checked but at least isn't an oversized item), and should still adjust to fit my tall kid for a long time. The main complaint with the Oobr is the short seat pan - for both kids, almost 3-4" of their thighs are unsupported by the seat in high-back mode, and they tend to scoot their bottoms forward from the seat back to compensate. Once they're old enough to ride backless, it shouldn't be a problem, but that's a long time to go with a less than ideal fit.

Easy to install and lightweight.

Amazing! We love our Nuna car seats! The color is beautiful!

Dont buy. I would have bought 2 more of these seats but the cup holders are too small to fit a very common kids water bottle like a Contigo. Very annoying. Now we cant have water in a cup holder. Come on product development do better!

3rd nuna car seat. Can’t go wrong with them. We Love them

Our favorite booster seat. My girls reached the height restriction on their 5 point and we wanted to keep them safe and secure still. This is the perfect option. Easy to use and comfy for my girls!

Transitioning to a booster seat is not my favorite milestone in childhood. Nuna has helped make that transition easier. This seat is SOLID; unlike the flimsy versions I often see in big box stores. I like that it latches into the car, offers SIP, reclines and GROWS in all directions for a proper fit. We are slowly becoming a NUNA family& will purchase another one of these boosters in the future.

Another great product from Nuna. We have brought our kids up with Pipa, Rava, and now the Aace. We love the functionality., looks, and of course safety that Nuna provides. Very happy with this booster!

Best booster seat ever! Nuna is my go to brand!

We used Clek car seats and were really sold on staying with Clek for our booster upgrade, until I heard they were uncomfortable. That really stuck with us, and we started researching other options. We came down to the Nuna AACE and the UPPA Alta. We chose Nuna for a few reasons -- comfort, head support, quality, and the ability to convert it to a non-back booster when the time comes. The uppa option did not have the 2-in-1 feature and while it cost less, it meant having to buy a 3rd seat down the line which didn't make sense for our family.

The Nuna installed easily, the quality is evident, the "grow with me" feature is awesome and my kiddo says it's comfortable.

He does feel like the arm rests make it harder to buckle the seat, and he's pretty skinny so the fact that you have to grow it width wise when you raise it doesn't really help him. Only other "complaint" is that the cup holder is SMALL. It fits a standard kids water bottle (thermos funtainer) but does not fit wider bottles (like a yeti/hydro/etc), so we're trying to find an adapter.

We just converted our 2 boys over to the booster seats. We purchased 2 to try them out and the boys love them. I love that these booster seat are secured into the seat. My 5 year old has no problem buckling himself in and getting out when he needs to.

Awesome seat! Very comfy, love it!

We transitioned from the Nuna Rava carseat to the booster. Easy to install, sturdy, comfortable, and looks great. The way the cupholder attaches to the seat is a little flimsy. Other than that, can't complain!

such a great purchase

This is our 4th nuna car seat purchase and I couldn’t be more pleased. Easy to use and setup, will definitely be ordering a second one for our other car.

My child loves it! Comfortable.

My very favorite booster seat. Easiest installation & love that it goes from high back to backless booster. Bonus that it looks SO good!

We chose this seat mainly for the flame retardant-free fabric. The fact that it is very comfortable, easy to use for our 5-year-old and the fact that it reclines with the seat at all huge bonuses. She loves her seat. The install was easy also.

Wonderful booster option for my 6 year old. We love Nuna, so we decided to try the booster and it’s love, just like our other seats.

I bought two of this car seat already. I also own the Nuna convertible car seat which is heavier than this one. This nuna car seat is very easy to assemble. This is minimal design car seat and I love all the the colors. It’s also lighter than the other nuna car seats so removing this car seat and transfer from car to car is just as easy. I like how this is a 2 in 1 car seat and comes with a cup holder.

I enjoy Nuna baby products, including their stroller, baby/toddler car seat, and this booster car seat. My child can easily take a nap in this comfortable booster car seat. I feel it is pretty safe as well. Definitely recommended.

Easy to install and lightweight. Comfortable and easy to use. Love the cup holder.

Super easy to install and looks so nice! As usual Albee baby online is easy to buy from with fast shipping!

Love how compact this seat is but the bottom seat cover constantly gets pulled off. It is worse when used as a stand alone booster vs. high back booster.

My sons been using this for close to 2 years now and we love it. The latch feature is great and held strong in our recent accident. Install is great and my 10 year old says it’s very comfortable compared to his cheap booster in my other car.

We love all things Nuna, so it only made sense to upgrade our oldest to the next lineup of car seats in their product family. My oldest is 5, and she loves the independence of this car seat. She gets right in and buckles herself. And also unbuckles herself when it’s time to get out! It’s given my big girl so much confidence and it’s really great quality which is expected from this brand. We love it!

My son was so happy to be out of a five point harness! The seat is safe, well-built and we are very happy with it! My only two complaints are that the snaps often come undone on the bottom of the seat cover and I wish the cupholder was built-in instead of removable.