| Mode | Weight | Height |
|---|---|---|
| Rear-facing harness | 5–40 lb | 19–40 in |
| Forward-facing harness | 30–65 lb | 34.4–49 in |
| Belt-positioning booster (high-back) | 40–100 lb | 43.4–52 in |
- Seat weight
- 16.5 lb
- Width
- Not published
- Usable life
- 10 years
- Aircraft
- Certified
Product images are not available right now.
Maxi-Cosi Pria Max+ All-in-One Convertible Car Seat
An all-in-one car seat with 3 modes: rear-facing harness 5 to 40 lb, 19 to 40 in; forward-facing harness 30 to 65 lb, 34.4 to 49 in; belt-positioning booster (high-back) 40 to 100 lb, 43.4 to 52 in.
At a glance
- Fits children from 5 to 100 lb
- Up to 52 in tall
- 3 modes: rear-facing harness, forward-facing harness, belt-positioning booster (high-back)
- Seat weighs 16.5 lb
- 10-year usable life
- Certified for aircraft use
Shopping links paused for a recall check
NHTSA lists 2 campaigns naming this model family (21C004000, 21C003000). I pause shopping links until I have read the campaign and checked which build dates it covers.
Who the Pria Max+ All-in-One Convertible Car Seat fits
This seat covers 3 stages, and a child has to meet every limit of the stage they are in. Maxi-Cosi gives it a 10-year life from the date of manufacture, so check the date label before using a hand-me-down.
- Rear-facing harness5 to 40 lb · 19 to 40 in
- The child faces the back of the car, which keeps the head, neck and spine supported in a frontal crash. Keep this mode as long as the child fits it.
- Forward-facing harness30 to 65 lb · 34.4 to 49 in
- The child faces forward in the seat’s own harness. Use the top tether every time, and stay in the harness until the child outgrows it.
- Belt-positioning booster (high-back)40 to 100 lb · 43.4 to 52 in
- The seat’s own back and belt guide route the vehicle belt across the shoulder, and the sides give the child something to lean on when they sleep.
What are the Pria Max+ All-in-One Convertible Car Seat weight, height and age limits?
| Mode | Child weight | Child height | Minimum age | Conditions |
|---|---|---|---|---|
| Rear-facing harness | 5 to 40 lb | 19 to 40 in | Not published | — |
| Forward-facing harness | 30 to 65 lb | 34.4 to 49 in | Not published | — |
| Belt-positioning booster (high-back) | 40 to 100 lb | 43.4 to 52 in | Not published | — |
A child must meet every limit for the mode they use. The labels on your seat and its manual are the final word.
Pria Max+ All-in-One Convertible Car Seat specifications
- Seat weight
- 16.5 lb
- Width
- Not published
- Usable life
- 10 years
- Aircraft use
- Certified for aircraft (see manual for which modes)
- Recline positions
- 3
- Headrest positions
- 5
How the Pria Max+ All-in-One Convertible Car Seat installs
- Lower anchors
- 1-click LATCH. Check your vehicle manual for which seating positions have anchors, and switch to the seat belt once the child passes the anchor weight limit in the manual.
- Recline
- 3 recline positions. The recline angle is what keeps a young baby’s airway open, so set it before tightening the install.
- Harness
- 5-position no-rethread headrest/harness. Check the harness height at each growth spurt: at or below the shoulders rear-facing, at or above them forward-facing.
Every install is a fit between one seat and one vehicle. Read both manuals, and use a free inspection station if anything is unclear.
Will it fit your car?
Maxi-Cosi does not publish a width for this seat, so measure your back seat and compare it with the seat in a store before buying. It weighs 16.5 lb, which matters if you will move it between cars or carry it through an airport.
- Check your vehicle manual for lower anchor positions and any head-restraint rules.
- Rear-facing seats need front-seat room: try the install behind the driver before you commit.
- Certified for aircraft use, so it can travel as a seat rather than checked baggage.
What features does the Pria Max+ All-in-One Convertible Car Seat have?
- 1-click LATCH
- 5-position no-rethread headrest/harness
- 3 recline positions
- Magnetic chest clip
Colors listed in the US
Sea Shadow.
Is the Pria Max+ All-in-One Convertible Car Seat recalled?
NHTSA currently lists 2 campaigns naming this Maxi-Cosi family: 21C004000, 21C003000. A campaign names a family, not always every build, so check your seat’s model number and date of manufacture against the campaign itself.
I have not reviewed these campaigns for this model yet, so shopping links stay paused here.
Before you buy
- Weigh and measure your child. The limits above are the manufacturer’s, and a child has to meet all of them for the mode they will use.
- Confirm the exact version. Colors, retail exclusives and model numbers change limits more often than you would expect.
- Read the manual before you buy, not after. It is linked above and holds the fit rules, the install methods and the expiry.
- Check recalls by model number and date of manufacture, and register the seat with Maxi-Cosi so you hear about the next one.
Sources
Other Maxi-Cosi convertible car seats
| Model | Top child weight | Seat weight | Width | Usable life |
|---|---|---|---|---|
| Pria Max+ All-in-One Convertible Car Seat (this seat) | 100 lb | 16.5 lb | — | 10 years |
| Sela All-in-One Convertible Car Seat | 100 lb | 27.25 lb | — | 10 years |
| Kani 4-in-1 Convertible Car Seat | 100 lb | 23.2 lb | — | 10 years |
| Pria Max All-in-One Convertible Car Seat | 100 lb | 16.8 lb | — | 10 years |
| Pria All-in-One Convertible Car Seat | 100 lb | 16.5 lb | — | 10 years |
| Petra All-in-One Convertible Car Seat | 100 lb | 14.75 lb | — | 10 years |
| Romi 2-in-1 Convertible Car Seat | 50 lb | 9.2 lb | — | 10 years |