As your little one does, the new Britax model develops comfortably, keeping them safe throughout all stages of their lives — from rear-facing infant seat to high-backed booster. In this chair, Britax One4Life Car Seat has integrated all of its security features such as Safe Cell, V-shaped brace, steel frame and ClickTight. The Britax One4Life is meant to be the only car seat your little one needs, from newborn all the way to 120 pounds.

The Britax One4Life Car Seat has a rear-facing seat at the first stage, which can be used from 4-50 pounds. There is a soft padding layer when your baby is a baby. It provides an additional side safety surface and snugly cradles a newborn neck. When you place Britax One4Life and Evenflo Symphony Elite on the same table, you will find how the lastest model of Britax car seat perform. You can take a look at Evenflo Symphony Elite Review before start with the Britax One4life to make your mind more clearly. 

The American Academy of Pediatrics suggests that children remain rear-facing until they meet the car seat’s maximum requirement.

Britax One4Life
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You can compared Britax One4life and others convertible car seat.

Britax One4Life Weight and Height Limits:

  • Rear-facing: 5-50 lbs. AND child’s head is 1” below top edge of headrest
  • Forward-facing: 22-65 lbs., 49” or less
  • Highback booster: 40-120 lbs., 44-63”, at least 4 years old

Britax One4Life Measurements:

  • Harness height: 7 ½ ”-19”
  • Shoulder belt guide height: 21 ½ ”
  • External widest point: 19 ½ ”
  • Base width: 14 3/4″
  • Shell height with headrest: 30 ½ ”
  • Shoulder width: 14”
  • Crotch strap depth: inner slot: 1 ½ ” without infant insert (headrest in lowest position); second slot: 1 ½ “ with infant insert, 5 3/4 ” without insert; outer slot: 7 ½” without insert
  • Seat depth: 13”
  • Seat weight: 29.5 lbs. with padding, 28.9 lbs. without padding

Britax One4Life Overview:

  • Improved ClickTight installation with color-coded belt guides
  • Adjustable 9-position base
  • No re-thread harness with 15 position headrest
  • Energy-absorbing, rip-stitch V-shaped tether
  • SafeCell technology
  • High strength steel reinforced frame
  • Energy-absorbing EPP foam
  • Deluxe push-on LATCH connectors
  • Flip-forward buckle pad
  • Built-in cooling channels with ventilated mesh for improved air flow
  • On-board harness storage for booster mode
  • Two dishwasher-safe cup holders
  • Easily removable machine-washable cover
  • 10 yr lifespan before seat expires
  • MSRP $364.99-$399.99
  • Cadet Drift Eclipse Black Plum Black Diamond

Britax One4LifeBritax One4Life

Between 22-65 pounds, the forward-looking car seat works. At this stage, it is easy to adjust the recline of the seat to keep your little one safe.

Eventually, this chair can use for 40-120 pounds as a booster seat. Once your child grows with the harness out of the booster, the harness tucks into a compartment behind the seat padding and the top headrest stretches out. It shows seat belt guides that allow your child to sit comfortably in your car’s back seat until it is at least 120 pounds.

Britax One4Life Safety Features

To ensure the safety of your little one, the Britax One4Life test model has already undergone rigorous safety testing. For infant mode, there are two layers of side impact defense. Parents can feel confident that their older child is safe even when used as a high-back booster.

We had their best features in mind as Britax designed this car seat. For easy installation, the One4Life features a ClickTight system. Instead of a button, it uses a squeeze feature, similar to the release mechanism used on the Britax front car seat.

The top tether of the Versa is back as well. In a car accident, top tethers are incredibly important for forward-looking children as they reduce head movement by a full 6-8. To prevent injury, this can be important. The Versa tether release mechanism is also simple to use, so no excuses are open for parents, babysitters, or relatives not to fasten your child in safely.

Something else that parents familiar with Britax will notice is their Safe Cell technology. In this car seat, you can see the Safe Cell layout. In an accident, this is instrumental in the proper dispersal of energy. The car seat absorbs the effect, which reduces the child’s sense of impact.

The anti-rebound bar is yet another safety feature. In a crash, this helps to absorb energy and keep your baby safer. It can also be mounted upside down in true Britax style while the chair is being used in forward-facing mode. For your son, it makes it a useful footrest, so there is no wasted part or room.


Certain features added to the car seat of Britax One4Life improve its usability and comfort.

There is a button to recline the chair in nine different positions on the side of the car seat. For rear-facing and forward-facing mode, this is particularly beneficial. Since your little one can recline and sit up, however relaxed, they can sit down.

The car seat’s exterior is designed to have a smooth base and shell. This smooth design makes it easier to install. When using the extended headrest for the booster, most vehicle models should not mess. Of course, when we check it out, we will see that for ourselves.

The Britax EZBuckle also makes it easier to get your child in their car. When your little one comes in and out of the vehicle, this buckle falls back. Hopefully, it means that you are going to spend less time digging under their legs to find the belt before buckling them into their seats.

Two cup holders can be used for their drinks, snacks or toys by your little one. These holders of cups seem to be robust. In the dishwasher, they are clear and secure for cleaning.

Finally, the thick, soft padding on this will be appreciated by your little one. Besides, there are mesh ventilation vents that will keep your child warm when they are in their car.

Britax One4Life
Britax One4Life

Use the seat belt! Like all other ClickTight seats, the One4Life is designed to be installed with the seat belt. Just forget the LATCH strap is there altogether because the install is more complicated (though there may be situations where you might need it and I’ll discuss those later). Here are the installation steps, which are conveniently outlined on the cover you lift to access the ClickTight panel:

  • Recline the carseat so it’s in the appropriate range for your child. The label on the side of the seat helps you determine where it should be.
  • Open the improved ClickTight panel.
  • Thread the seat belt through the green belt path and buckle.
  • Pull the slack out of the shoulder belt. The amount of slack you remove dictates how tight the installation will be, obviously. As with other carseats, you want less than 1” of movement at the belt path. However, if you remove too much slack, the CT panel won’t close.
  • Push down on the panel to close it. You’ll hear it lock into place. That’s it.
Britax One4Life



Britax One4Life Final Take

The Britax One4Life car seat from a leading brand is an all-in – one option. While it is in the upper price range, any parent seeking to avoid the hassle of buying multiple car seats through their child’s life is a great investment.

For each mode, the wide weight range enables this to fit many children, while features such as a nine-position recline and an anti-rebound bar make your little one safe and comfortable.

4 thoughts on “Britax One4Life Car Seat Review 2019

  1. Pingback: Best car seat 2019: The best baby car seats from birth to age 12

  2. Pingback: Britax Marathon ClickTight Convertible Car Seat Review

  3. fusionguitarplayer says:

    Is the Britax One4Life ClickTight All-In-One Car Seat still available via They won’t answer my question via facebook.

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