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SITS Fav SEAT

Chicco OneFit

Learn more about the Chicco OneFit 3-in-1 car seat.

Seat is good for you if:
  • You have a tall child.
  • You want a car seat that’s easy to install.
  • You want a car seat with a seat belt lock-off.
Use caution if you:
  • You have a vehicle with non-removable headrests.
  • You need to fit 3 people in one row of the vehicle.
  • You want to use a convertible seat from birth.
Stand-out features:
  • ClearTex fabric option is flame-retardant free
  • Lock-off
Buy Now: 
SITS checks manufacturers and retailers daily to ensure these are the lowest prices available for these models.
Chicco
OneFit
Buy Now
239.99

Our Review of the 

Chicco OneFit

Learn more about the Chicco OneFit 3-in-1 car seat.

Age

A few months old until 9-10 years of age

Type

A 3-in-1 car seat that can be used rear-facing, forward-facing, and in high-back booster mode

When

Possibly from birth if your vehicle has flat seats

Buy Now: 
SITS checks manufacturers and retailers daily to ensure these are the lowest prices available for these models.
Chicco
OneFit
Buy Now
239.99
Michelle sitting in a chair reading a book.

Stand Out Features of this Car Seat

ClearTex fabric option is flame-retardant free

If having a seat with flame-retardant-free fabric is important to you, you will be happy to know that all of the fabric options are made with Chicco's ClearTex fabric!

Lock-off

If you want to install your car seat in the middle and your middle seat does not have lower anchor points, then you will need to do a seat belt installation. The Chicco OneFit has a lock-off that makes this installation very simple. This feature may also appeal to you if you have a vehicle older than 1996 or if you are planning to travel internationally.

Seat is good for you if 

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You have a tall child.

The Chicco OneFit has a tall harness height of 18.5" and it has a standing height limit of 54" for the harness mode. Both of these features make this seat a great option for taller kids. 

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You want a car seat that’s easy to install.

The easiest way to install the Chicco OneFit is with the lower anchors thanks to Chicco’s SuperCinch lower anchor tighteners. But these can only be used until the child is 35 pounds for rear-facing mode and 40 pounds for forward-facing mode. The seat belt installation is pretty easy as well though since it does have lock-offs.

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You want a car seat with a seat belt lock-off.

If you are planning to use a car seat in a vehicle that is older than 1996 or you want a seat with a lock-off because you are traveling internationally, this could be a good option for you, although it is a bit heavy. If you would like a seat that is a bit lighter, check out our review of the Graco Triogrow.

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Use caution if

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You have a vehicle with non-removable headrests.

This would only be an issue once you get to forward-facing mode. Chicco does not want the vehicle’s headrest to push the Chicco’s headrest forward. Since the Chicco Nextfit Max ClearTex has many recline options, you may find that this seat will work in your vehicle. But when in doubt, the best thing to do is to contact Chicco and see if they approve the setup!

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You need to fit 3 people in one row of the vehicle.

Since the Chicco OneFit is 19 inches wide and most vehicles cannot accommodate a car seat this size in a three across configuration, this would not be your best option for this kind of scenario. Instead, try one of our recommended car seats for 3 across.

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You want to use a convertible seat from birth.

The harness height is low enough to fit a newborn. The problem we have found is the recline. In vehicles with very sloped seats, it is not always possible to recline this seat enough for a newborn. Chicco does not allow the use of rolled towels or pool noodles to increase the recline. If your vehicle has very flat seats, this seat may work from birth.

Quirks to be aware of

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Has recline bubble for harness and booster modes

Recline bubbles are uncommon on forward-facing harnessed seats and even rarer with boosters. But this seat has a recline bubble for each of those. The Chicco MyFit has 4 recline options to help you get the bubble in the right area.

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Child Fit Information

We were able to try a 2 month old in this seat. She was 10.5 pounds and 23" tall.  She had a great harness fit!

Installation Information

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Airplane Use

The Chicco OneFit is an aircraft-approved car seat when used in the rear or forward-facing harness modes. At 25 pounds, it is one of the heavier seats available. If traveling internationally, this seat has a belt lock-off, so it will work well. For help with all things airplane travel and car seats, check out our Wheels Up Course and private Facebook group.

Videos

This carseat does not have any videos yet.

SITS Bottom Line

The Chicco OneFit has an 18.5" harness height and a 54" height limit, making it a good choice for taller children. The seat installs easily with Chicco’s SuperCinch lower anchors (usable up to 35 pounds rear-facing and 40 pounds forward-facing) or with the built-in seat belt lock-offs. It’s not recommended for three-across setups due to its 19-inch width. The OneFit may have issues fitting in vehicles with non-removable, forward-tilting headrests in forward-facing mode, so checking compatibility with Chicco is advised.

Buy Now: 
SITS checks manufacturers and retailers daily to ensure these are the lowest prices available for these models.
Chicco
OneFit
Buy Now
239.99

Similar Car Seats

This car seat does not have any other versions.

Specifications

Chicco

OneFit

Product Information

Weight: 25lbs

Width: 19"

Highest Harness Height: 18.5"

Rear Facing Limits

Height: 43"

Weight: 5-40lbs

Head Height Rules: n/a

Lower Anchor Connectors Weight Limit: 35lbs

Forward-Facing Limits

Height: 54"

Weight: 23-65lbs

Head Height Rules: ears must be below the top of the headrest

Lower Anchor Connectors Weight Limit: 40lbs

No Back Booster Limits

Highest Belt Guide Settings

21"

High Back Booster Limits

Height: 38-57"

Weight: 40-100lbs

Head Height Rules: ears must be below the top of the headrest

Other Important Details

Newborn Fit

not recommended; sometimes you cannot get the seat reclined enough

Expiration Limit

10 years

Crash Replacement Policy

replace after any crash

Harness

no-rethread

Lock-off

yes

Vehicle Seat Protector

This brand does not permit a vehicle seat protector.