Nuna AACE Booster Car Seat



The Nuna AACE grows with your child during the pivotal transition from pre-schooler to pre-teen, starting as a high-back booster and converting to a backless booster for big-kid status.

The AACE allows your child to grow up and out, thanks to its 3-position seat depth and 9-position adjustable headrest that simultaneously expands the shoulder area, too.

Energy-absorbing foam with side-impact protection pods provide top protection, while the belt positioner and color-coded indicators minimize the possibility of user error.

The AACE is fire-resistant without the use of any flame retardant chemicals, from the fabric to the foam used in this booster car seat. The AACE meets the standards for Greenguard Gold certification, which means it has been thoroughly tested and certified to not contribute VOC's, or hazardous chemicals, into the air your child breathes.

The Nuna AACE helps keep your child comfortable on long car rides, thanks to 8 recline positions in high-back mode, an included cup holder, breathable and washable fabrics, and ventilation panels inside the shell of the seat.


  • Converts from high-back booster to backless booster as your child grows
  • Energy-absorbing foam and side-impact pods offer top crash protection
  • Headrest offers 9 height positions and can be adjusted with one hand
  • Shoulder area of seat expands automatically when headrest is raised
  • Seat offers 3 depths to support growing legs
  • Built-in arm rests add comfort
  • Can be reclined to 8 positions in high-back booster mode
  • Belt positioner and colored belt path indicators help decrease errors
  • Rigid LATCH connectors offer easy installation
  • Fabrics are breathable and machine-washable
  • Free of flame-repellent chemicals
  • Greenguard Gold certified


  • Recommended use for high-back booster: 40-110 pounds, 38-60", age 4+
  • Recommended use for backless booster: 50-120 pounds, 38-60", age 5+
  • Dimensions: 26-33"H x 21.5-22.5"W x 15"L
  • Product weight: 15.6 pounds
  • Expiration: 10 years

What's Included

  • Nuna AACE booster seat
  • Dishwasher-safe cupholder
  • AACE starter kit

Shipping Information

Most orders are shipped via FedEx Ground from our warehouse in Scottsdale, Arizona within 1 business day.

In some cases, Strolleria will dropship an order directly from the manufacturer to the customer to shorten the delivery time. In these instances, items typically ship within three business days, but the total delivery time is reduced.

Please see this page for the number of days it takes for products shipped via FedEx Ground from Scottsdale to arrive at your location. FedEx delivers packages on Saturdays and Sundays in most cities, excluding rural areas.

Return Policy

Strolleria accepts returns of new, unused items that are returned to us within 60 days of receipt. 

Because safety is a top priority for us and all new parents, Strolleria only accepts returns of items that have never been used. Items must be returned in the same condition in which you received them, including the original packaging.

All products sold by Strolleria are covered under a manufacturer's warranty. If the product is defective or becomes damaged during the warranty period, the manufacturer will send a repair or replacement part at no cost.

Visit this page for our complete return policy.


Customer Reviews

Based on 6 reviews
Car seat expiration date

I bought this car seat in June of 2020 for my child thinking Ill splurge on this one and it will be put to good use for at least 10 years. But to my surprise checking the date it was manufactured in march of 2014. Which means I only have 2 years before I get another one. My child is on the smaller petite side so by the time she will be able to use the booster I would have to purchase another one. I assumed it was made in 2020 and because it was listed as 2020 Nuna ACEE booster seat. I should of checked it anyway. But I would advise for you to check the date, return if needed and spend your money ELSEWHERE.

Jason Chen
Great car seat

We love this car seat, it was super light, easy to transfer between cars and it only takes seconds to install.

Another Nuna win

Seat is fantastic! So easy to put together and install! No surprise there as nuna never seems to disappoint! Big emotions transition going to a seatbelt instead of a 5point harness, but we all love it. We will continue being a Nuna only family

Krystal Romero

Soooo comfortable the material is top notch super recommended

Ellen S.
Deep enough for tall kids

I was going back and forth between Clek oobr, uppababy vista, and Nuna Aace. I had to return the Clek because the seat depth was way too shallow for my daughter who has very long legs (49” 7 yr old). The AACE is great!! The seat length extends to a comfortable length to support her legs, I also love that the sides are high enough to keep her shoulders supported and the head support is perfect too. It’s a well made seat, the fabric is nice, and she also loves the recline option so she doesn’t have to sit so stiff and straight as with many high back boosters. The only thing that could Improve is the cup holder. It’s a little too slim, and it would be nice if it was a solid cup so she could put toys/misc items in it instead of just Open where the only thing it will hold is a cup. Overall great seat and we are very pleased!