Diono Monterey 5iST FixSafe vs Nuna AACE
The Monterey 5iST FixSafe is 5.5 in narrower. The Monterey 5iST FixSafe lists for $40.01 less.
Only the differences are shown.
| Diono Monterey 5iST FixSafe | Nuna AACE | |
|---|---|---|
| Type | Booster | Booster |
| List price | $259.99Lowest price | $300 |
| Booster weight | 40–120 lb | 40–120 lb |
| Booster height | 38–63 in | 43–60 in |
| Seat weight | 18.7 lb | 15.6 lbLightest |
| Width | 17 inNarrowest | 22.5 in |
| Head rule | Use ONLY with children whose ears are below the top of either the fully raised booster seat head support or the fully raised vehicle headrest. | No Back mode: The top of the child's ears should be AT or BELOW the top of the vehicle seat back or the vehicle's headrest. |
| Installation | LATCH, seat belt | LATCH (lower anchor connectors), seat belt |
| Load leg | No | No |
| Anti-rebound bar | No | No |
| Rotates | No | No |
| Recline positions | Not listed | 8 |
| Aircraft label | Not certified for aircraft | Not certified for aircraft |
| No added flame retardants | Not listed | Yes |
| Expires after | 8 years | 10 years |
Diono Monterey 5iST FixSafe
A fold-flat high-back booster that collapses to carry-on size, with a 12-position adjustable headrest and backrest.
- Folds small for travel and carries on
- Narrow 17 in width
- Wide 40 to 120 lb range
- Heavy at 18.7 lb for a travel booster
- Fairly high regular price
Nuna AACE
A high-back booster that converts to no-back, with an 8-position recline and 9-position headrest.
- Grows with the child (headrest height, shoulder width, seat depth)
- Recline in high-back mode
- Fire-retardant-free materials
- Wide, up to 22.5 in
- 15.6 lb
Ask the meadow
Monterey 5iST FixSafe or AACE?
Answers come from each maker's published specs. Safety and health questions link to the agency or medical source.
Which is easier to travel with?
Monterey 5iST FixSafe: 18.7 lb. AACE: 15.6 lb. Neither lists aircraft certification.
What does the extra $40.01 for the AACE get you?
Per the makers, the AACE adds no added flame retardants. Both meet the same federal crash standard.
Still wondering? Write to us at hello@cribpicks.com and we'll look it up.