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Item # CS-40-002

Nuna AACE Booster Car Seat - Slate

Share Nuna AACE Booster Car Seat - Slate

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Item # CS-40-002


Seat weight: 15.6 lbs
Child Weight: 40-120 lbs
Child Height: 38-60 in
Dimensions (in): 22.5 H x 14.5 L x 12 W

What's Included:

Integrated cup holder

3D Growth System

Grow up, grow out, grow on. A 9-position height adjustable headrest, simultaneously expanding shoulder system and seat with 3 depths give growing children plenty of space and support.

Recline & Relax

Customizable 8-position recline in highback mode. Ventilation panels within the shell create a comfy climate for even the longest of trips. Cozy, built-in armrests let little arms take a break.

Side Impact Protection

Energy absorbing foam and SIP pods take side impact security to the next level.

Backless Booster

The 2-in-1 design allows you to convert AACE from a high back to a backless booster.

It's streamlined, customizable and as beautiful as a booster seat gets. AACE grows comfortably with your child and even converts to a no back booster. It also exceeds American safety standards - the only thing about it that's overdone. Join the grow-volution.

3D growth system

  • Grow up: one-hand, 9 position height adjustable headrest
  • Grow out: shoulder system works simultaneously with the headrest, expanding out while growing up
  • Grow on: seat sports 3 depths giving growing legs plenty of support and space
2-in-1 design
  • Converts from a high back to a no back booster
  • Energy absorbing foam and SIP pods take side impact security to the next level
  • Belt positioner aids in correct shoulder belt routing and minimizes user error
  • Colored belt path indicators help decrease risk of user error
  • Lower anchor connectors easily secure car seat to vehicle seat during use or transport
  • Customizable recline thanks to 8 different positions (in high back mode only when using lower anchor connectors)
  • Ventilation panels within the shell and breathable (and washable!) knit fabric create a comfy climate for even the longest of trips
  • Little arms can take a break thanks to cozy, built-in armrests
  • Sleek and chic micro-knit fabric is easy to remove and machine washable
  • Included cup holder is removable and dishwasher safe
  • AACE starter kit includes a cup holder, belt positioning clip & a set of LATCH guides (included with purchase)


  • Weight: 15.6 lbs
  • Dimensions: 22.5 H x 14.5 L x 12 W
High Back Booster:
  • Recommended child weight: 40-110 lbs
  • Recommended child height: 38-60 in
  • Suggested age: 4 years and up
No Back Booster:
  • Recommended child weight: 50-120 lbs
  • Recommended child height: 38-60 in
  • Suggested age: 5 years and up
Easy to clean
  • Seat pad:
    • Machine wash on cold
    • Lay flat
    • Air dry
    • Do not use abrasives or bleach
  • Plastic:
    • Wipe with a damp cloth
    • Air dry

2 Reviews
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100% Recommend this product (2 of 2 responses)
By Crystal
Las Vegas, NV
April 26, 2017
Amazing... Wide, but also VERY amazing!
I always like to use something for a few weeks before I attempt to tell anyone how great it is. I am a mom of 3 and a certified foster home, so trust me when I say I've seen my fair share of car seats + boosters! This particular one is super easy to assemble, even if you are outnumbered by tiny humans and running on tiny energy fumes. You just snap the two pieces together, and bam. Done. Installation is also idiot proof. Give the booster one good push and you're golden. Also, removing the booster to transfer from car-to-car is as simple as pressing in two buttons and pulling the booster out. As far as being comfortable, my 4 year old falls asleep in this thing almost every time he's in it. And, it is, by far, the most padded booster (and maybe even car seat) I've ever felt. We have two Clek's and one Evenflo at the current moment, and this is squishier than ALL three. The seatbelt guide is a nice feature, as is the cupholder. The fabric REALLY does wick away heat! We live in Vegas, so I can definitely say that with confidence. Aside from all of that, the side/neck/head coverage is amazing and I feel really good about my little guy being in it! His head DOES NOT slump forward, not ever, not even once. We have an Infiniti JX35 and a Nissan Rogue, and his head doesn't slump when this seat is installed in either vehicle, regardless of the recline of the seat. We love this thing, and so does the little guy. Highly, highly recommend.
ProsHigh quality material, Easy installation, Comfortable, Heat Wicking, Cup holder
Best UsesIf you have TALL tiny humans!!!! The extra pull-out leg area is AMAZING!
By Victoria
Occidental ca
December 31, 2016
Great seat that grows with your child.
Excellent carseat! My daughter is comfortable, safe, its attractive and it will grow with her for many years to come.

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