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The Nuna AACE is the booster seat that covers the full span from the transition out of a harnessed car seat through the point where a child fits the vehicle belt without any booster at all. The 2-in-1 design starts as a high-back booster for children 40 to 110 lbs at least 4 years old, then converts to a no-back booster for children 50 to 120 lbs at least 5 years old by removing the seat back. One seat handles the entire booster stage without a second purchase.
The 3D Growth System is what makes the AACE genuinely adaptable rather than just adjustable in one direction. Grow Up is the one-hand 9-position headrest that raises the seat height as the child gets taller. Grow Out is the shoulder system that expands automatically as the headrest moves up, keeping the side wings aligned with the child's shoulders without a separate adjustment. Grow On is the three-position seat depth that extends the seating surface to support growing legs. These three systems work together so the seat fits correctly throughout a weight range that typically spans five or more years of use.
The integrated SIP pods deploy from either side of the seat back and provide energy-absorbing side impact protection at head and torso level. The lower anchor connectors serve two functions: they secure the booster to the vehicle seat during use and transport, and they enable the 8-position recline adjustment in high-back mode by allowing the seat bottom to tilt. The colored belt path indicators and integrated belt positioner reduce the most common installation errors by visually guiding correct shoulder belt routing every time.
The AACE is GREENGUARD Gold Certified and built without added flame-retardant chemicals. The knit fabric cover is breathable, machine washable, and removable without tools. Ventilation panels in the shell manage temperature on longer trips. The included cup holder is dishwasher safe. When your child is ready for the AACE, ANB Baby also carries the full Nuna car seat lineup including the EXEC all-in-one and the RAVA convertible for the stages that come before. All orders over $45 ship free.
| Brand: | Nuna |
| Product Name: | AACE Booster Car Seat |
| Product Type: | Booster Car Seat |
| Color Options: | Granite, Caviar, Lake, Cedar |
| Car Seat Dimensions (Highest Position - HBB): | L 15 in, W 22.5 in, H 33 in |
| Car Seat Dimensions (Lowest Position - HBB): | L 14.6 in, W 21.5 in, H 26 in |
| Car Seat Weight: | 15.6 lbs |
| Car Seat Recommended Use: | High back booster: 4+ years, 40–110 lbs, 43–60 in; No back booster: 5+ years, 50–120 lbs, 43–60 in |
| Color | Manufacturer SKU | UPC |
| Granite | CS07007GRN | 8719743747067 |
| Caviar | CS07007CVR | 8719743747050 |
| Lake | CS07007LAK | 8719743747074 |
| Cedar | CS07011CDR | 8721094550593 |
The Nuna AACE 2-In-1 Booster Car Seat is designed for children starting at 4 years old and accommodates up to 120 lbs. Its adjustable design allows it to grow with your child for long term use.
The seat features a 10-position adjustable headrest, expanding shoulder wings, and three seat depth positions, allowing for a customized fit that adapts as your child grows.
Yes, the Nuna AACE easily converts from a high-back booster for children 40 to 110 lbs to a no-back booster for children 50 to 120 lbs, providing flexibility as your child gets older.
The Nuna AACE includes advanced safety features such as SIP pods for side-impact protection, energy-absorbing foam, anchor clips, a stabilizing metal bar, and a 5-star rating from the Child Restraint Evaluation Program (CREP).
Yes, it is designed for comfort with breathable, washable knit fabric, ventilation panels, built-in armrests, and multiple recline positions to keep your child comfortable on longer trips.
Yes, the Nuna AACE is GREENGUARD Gold Certified, meaning it meets strict standards for low chemical emissions, and it is highly rated by the Child Restraint Evaluation Program (CREP).
The Nuna AACE is designed for easy installation with lower anchor connectors, clearly marked belt path indicators, and a belt positioner that helps reduce user error.
Yes, the booster features a one-hand adjustable recline with eight positions, allowing you to find the most comfortable angle for your child.
Yes, the 3D Growth System and expanding shoulder design help keep your child properly aligned and reduce sliding, improving both comfort and safety.
Yes, it includes the AACE Starter Kit, which features a dishwasher-safe cup holder for added convenience during everyday use.





