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SITS Fav SEAT

Britax One4Life

Britax has recently discontinued many of their seats, such as the Marathon, Boulevard, Advocate, Allegiance, and Emblem convertible car seats. But the One4Life is staying on the market as far as we know! It comes with the ClickTight installation that we absolutely love. It makes the installation so quick and easy for caregivers. It also has a no-rethread harness with 15 headrest positions, which makes it easy to adjust the harness height as your child grows. It fits kids, with comfort, of many ages and sizes. Check out our Britax One4Life Car Seat review below to see if it is the right seat for your child!

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 have a small back seat.
  • You need to fit 3 across in a vehicle.
Stand-out features
  • SafeWash fabric option is flame-retardant free
  • Lock-off
  • Anti-Rebound Bar (separate purchase)
Buy Now: 
SITS checks manufactures and retailers daily to ensure these are the lowest prices available for these models.
Britax
One4Life
Buy Now
279.99

Our Review of the 

Britax One4Life

Britax has recently discontinued many of their seats, such as the Marathon, Boulevard, Advocate, Allegiance, and Emblem convertible car seats. But the One4Life is staying on the market as far as we know! It comes with the ClickTight installation that we absolutely love. It makes the installation so quick and easy for caregivers. It also has a no-rethread harness with 15 headrest positions, which makes it easy to adjust the harness height as your child grows. It fits kids, with comfort, of many ages and sizes. Check out our Britax One4Life Car Seat review below to see if it is the right seat for your child!

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

After you’ve used an infant seat for a few months or after the infant seat has been outgrown

Buy Now: 
SITS checks manufactures and retailers daily to ensure these are the lowest prices available for these models.
Britax
One4Life
Buy Now
279.99
Michelle sitting in a chair reading a book.

Stand Out Features of this Car Seat

SafeWash fabric option is flame-retardant free

Britax is moving over to all flame retardantfree fabrics. But until the other fabric options are out of stock, make sure to choose a version with SafeWash fabric if this is important to you.

Lock-off

The ClickTight panel functions as a seat belt lock-off. It is very easy to use and allows caregivers to quickly get a tight installation in their vehicle.

Anti-Rebound Bar (separate purchase)

Although it is a separate purchase, an anti-rebound bar is an added safety feature for rear-facing that can reduce the secondary movement of the car seat, called rebound, during a crash. When a collision occurs, the car seat will move forward, towards the front of the vehicle, and rotate downward. And as we all know from high school physics, every action has an equal and opposite reaction — so after that initial movement, the car seat will rebound, or “bounce back” towards the backrest of the vehicle seat. The ARB minimizes this bounce-back effect, helping limit the car seat movement and your child inside it! ARBs may also limit the side-to-side rotation of the car seat in a side-impact collision. Overall, it’s a great feature on a rear-facing car seat!

Seat is good for you if 

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You have a tall child.

This seat has one of the tallest harness heights available as it goes up to 19.” Most car seats on the market have 17-18″ harness heights. If you have a child who is higher percentile for height, this could be a good option to consider.

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

It’s hard to find a seat that has a seat belt installation easier than the ones that feature Britax’s ClickTight technology like the Britax One4Life does. The ClickTight panel is located behind the padding. After opening it up, all you have to do is thread the vehicle seatbelt through the correct belt path, buckle it in, gently remove any obvious slack, and close the ClickTight panel. Note that the ClickTight panel is designed to be used with the vehicle seatbelt. Don’t even bother with a lower anchor installation; a seatbelt is the way to go for this seat!

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

This seat has a seat belt lock-off. So it can be a good option in vehicles older than 1996 that don’t have locking seat belts or need to be installed in international vehicles.

Use caution if

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You have a vehicle with non-removable headrests.

If your vehicle has non-removable headrests, we do not recommend buying the Britax One4Life. It may not be compatible in the forward-facing and booster modes. You can check this post for car seat options that do work with non-removable headrests.

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You have a small back seat.

This is not one of the smaller front-to-back seats. If you have a small back seat and/or the car seat needs to fit behind a tall driver, you may want to consider some more compact car seat options like these.

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You need to fit 3 across in a vehicle.

Since the Britax One4Life is 19.5″ wide, it’s not a good option for caregivers who are looking to fit 3 across in their vehicle. You can find some much better options here.

Quirks to be aware of

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V-Shaped Tether

The top tether should always be used when a child is forward-facing. Britax’s top tethers are v-shaped instead of the typical top tether design. Generally this kind of top tether will go around both sides of the vehicle’s headrest.

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airplane

Airplane Use

The Britax One4Life is an FAA-approved car seat. At 29 pounds, it is one of the heaviest options 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

As long as your vehicle has removable headrests, you are not planning on using this seat from birth, and you don’t need to fit 3 across in your vehicle, it’s likely a great option for you. It’s easy to install, which makes it great for any caregiver, even older ones who may have trouble getting a tight installation with other car seats. It’s a long-lasting option as well thanks to the high rear-facing limits and the high harness height.

Buy Now: 
SITS checks manufactures and retailers daily to ensure these are the lowest prices available for these models.
Britax
One4Life
Buy Now
279.99

Similar Car Seats

This car seat does not have any other versions.

Specifications

Britax

One4Life

Product Information

Weight: 29lbs

Width: 19.5"

Highest Harness Height: 19"

Rear Facing Limits

Height: 49"

Weight: 5-50lbs

Head Height Rules: at least 1″ below the top of the headrest

Lower Anchor Connectors Weight Limit: 30lbs

Forward-Facing Limits

Height: 49"

Weight: 22-65lbs

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

Lower Anchor Connectors Weight Limit: 35lbs

No Back Booster Limits

Highest Belt Guide Settings

21.5"

High Back Booster Limits

Height: 44-63"

Weight: 40-120lbs

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

Other Important Details

Newborn Fit

not recommended; lowest harness height is too high for many newborns

Expiration Limit

10 years

Crash Replacement Policy

replace after a moderate or severe crash

Harness

no-rethread

Lock-off

yes

Vehicle Seat Protector

This brand does not permit a vehicle seat protector.