SeatFitFindercar seats, by spec

mifold Grab-and-Go vs Nuna AACE

Both are booster car seats — here are their published manufacturer specs side by side.

This compares published manufacturer specs — not safety or fit advice. The seat's manual, your vehicle's manual, NHTSA's tools and a certified CPST are the fit-and-safety authority; always check them before installing.

Specmifold Grab-and-GoNuna AACE
StageBoosterBooster
Narrow (3-across)✓–
Extended rear-facing––
FAA-approved––
Lightweight / travel✓–

mifold Grab-and-Go

40–100 lb

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Nuna AACE

40–120 lb

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As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Weight ranges are the manufacturer's published limits across all modes.

How they differ

Published limits

Modemifold Grab-and-GoNuna AACE
Booster (with back)—40–110 lb · 38–60 in · 4+ yrs
Booster (backless)40–100 lb · 40–59 in50–120 lb · 38–60 in · 5+ yrs
Useful life7 yrs from manufacture10 yrs from manufacture

mifold Grab-and-Go: Backless booster, lap-and-shoulder belt only, age 4+. From the US manual for model MF12-US (the US version of the mifold grab-and-go): 40–100 lb and 40–59″. Discontinue use 7 years after the manufacture date printed on the Shoulder Belt Guide Adjustment Clip.

Nuna AACE: Belt-positioning booster convertible between high-back and backless mode — the two modes have genuinely different weight floors and minimum ages (high-back: 40 lb / 4y+; backless: 50 lb / 5y+), same height range for both. Do not use if more than 10 years old (printed number, per manual).

Printed verbatim in the manufacturer's manual (mifold Comfort US manual (MF12-US) · Nuna AACE Booster Seat User Manual); “—” = not published for that mode, “not yet sourced” = we haven't read that manual yet, not that the seat has no limit. How we source these →

Recall record

mifold — no notice names it in this record · Nuna — 1 on NHTSA's record.

That is the record of the brand — not a verdict on these models. A recall names specific models and manufacture-date ranges, and a seat missing from the record is not "recall-free": check nhtsa.gov/recalls with the model and date of manufacture on your seat's label. Source: NHTSA, retrieved 2026-09-05.

Where to buy

mifold Grab-and-Go

See price on Amazon

Nuna AACE

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As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Affiliate links never affect our specs or which seats we compare.

FAQ

What's the difference between the mifold Grab-and-Go and the Nuna AACE?
The mifold Grab-and-Go is narrow for 3-across, lightweight/travel; the Nuna AACE lists none of the narrow / extended-rear-facing / FAA / lightweight flags. Both are booster car seats.

Which fits three across, the mifold Grab-and-Go or the Nuna AACE?
The mifold Grab-and-Go is listed narrow (~≤17″) for 3-across; the Nuna AACE isn't. Three-across fit still depends on your exact vehicle — confirm before buying.

Which is right for my car and child, the mifold Grab-and-Go or the Nuna AACE?
That depends on your specific vehicle and child — this page compares published manufacturer specs only, not fit or safety. Check the seat manual, your vehicle manual, NHTSA's car-seat finder and ideally a certified CPST before deciding.

Citing these specs? Go ahead — published manufacturer data, last verified 2026-06-11. Copy a ready-made reference:

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