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Britax One4Life Convertible Car Seat, 10 Years of Use from 5 to 120 Pounds, Converts from Rear-Facing Infant Car Seat to Forward-Facing Booster Seat, Performance Fabric, Cool Flow Carbon

  • Based on 1,012 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Jun 7
Order within 22 hours and 7 minutes
Available payment plans shown during checkout

Color: Cool Flow Carbon


Style: One4Life


Features

  • 10 YEARS OF USE: The Britax One4Life all-in-one car seat delivers comfort and security from 5 to 120 pounds and up to 63 inches tall
  • ONE CAR SEAT FOR LIFE: This car seat features 4 configurations, including rear facing infant car seat, rear facing toddler car seat, forward facing 5 point harness car seat, and forward facing high back booster seat
  • INSTALL WITH CONFIDENCE: ClickTight(R) technology makes installation easy simply open the seat, thread and buckle the seat belt, and click the seat closed
  • PREMIUM PADDING AND COMFORT: The built-in cooling channels and Cool Flow mesh fabric improve airflow to help keep your child cool and comfortable
  • SAFETY YOU CAN TRUST: Equipped with a steel frame, SafeCell(TM) crumple zone, patented V-shaped tether, and two layers of energy management
  • A SECURE FIT IN SECONDS: The 15-position headrest and harness move together using one hand, so you can quickly find the proper fit as your baby grows (no rethreading)
  • REMOVABLE INSERT AND PILLOW: Helps keep your baby safe and comfortable under 20 lbs, and the tag-free headrest and pillow provide additional comfort and support without irritation
  • 9-RECLINE POSITIONS: Quickly adjust between 9-recline positions and use the easy-read level indicators to find the correct angle for your vehicle
  • DISHWASHER-SAFE CUP HOLDERS: The 2 removable cup holders can be used for your little one's drink or snack and easily twist out for cleaning between rides
  • MACHINE-WASHABLE COVER: The easy-to-remove car seat cover features naturally flame-retardant fabrics with no added FR chemicals and is safe to machine wash and dry

Description

Enjoy safe travels from birth to big kid with the Britax One4Life all-in-one car seat. This car seat features 4 configurations, including rear facing infant car seat, rear facing toddler car seat, forward facing 5 point harness car seat, and forward facing high back booster seat. Start with the rear facing car seat for infants and toddlers, then graduate to the forward facing car seat and booster car seat for preschoolers and big kids. ClickTight technology makes it easy to install your new baby car seat with confidence. Simply open the seat, follow the path to thread the seat belt, buckle it, and click the seat closed. The One4Life all in one car seat is outfitted with a high-strength steel frame, a SafeCell crumple zone, and a patented V-shaped tether. The protective seat shell and foam-lined headrest help absorb impact energy and are designed to help keep your child's head, neck, and body safe. Adjust the 15-position headrest and no-rethread harness at the same time, so you can find a secure fit in seconds. Quickly adjust between 9 recline positions and use the easy-read level indicators to find the correct angle. The Britax One4Life comes with an easy-to-remove, machine-washable cover, and the knit construction is naturally flame-retardant.

Brand: Britax


Installation Type: Seat Belt


Material: Polypropylene


Color: Cool Flow Carbon


Orientation: Forward Facing


Product Dimensions: ‎20.5 x 19.5 x 25 inches


Item model number: ‎E1C904F


Minimum weight recommendation: ‎5 Pounds


Maximum weight recommendation: ‎120 Pounds


Maximum height recommendation: ‎63 Inches


Material Type: ‎Polypropylene


Material Composition: ‎steel


Care instructions: ‎Hand wash with mild soap


Style: ‎One4Life


Number of reclining positions: ‎15


Batteries required: ‎No


Orientation: ‎Forward Facing


Rear-facing minimum child weight: ‎5 Pounds


Rear-facing maximum child weight: ‎50 Pounds


Forward-facing minimum child weight: ‎22 Pounds


Forward-facing maximum child weight: ‎120 Pounds


Harness type: ‎5-Point


Item Weight: ‎30 pounds


Country/Region of origin: ‎USA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jun 7

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Highly recommend
Color: Jade Onyx Style: One4Life
I just purchased this car seat. First off How it looks: beautiful love the style comes in many colors and styles i did the one 4 life click tight ( it is actually true it installs tightly). Supper soft and easy to follow instructions. What features: well I purchase this for easy installation and it also looked very comfortable too when it arrived it had many cushions and air netting on the sides for to breath. Side button with one push and easy to adjust tilit It was easy to find the buttons all labeled side and under the seat. Pros: easy to read and understand, easy to adjust and installation was a breeze. Once installed correctly it dosent move at all very impressive as I have had many car seats and they always move a little even once installed correctly this one was zero movement highly recommend for safty. Con well I don't really have any yet it is so far everything I hoped for. So weight: well it is on the more heavier side but it's not any heavier than Carring a baby carrier with base. It is solid to carry and solid once buckled. Other qualities it also is approved for other transport such as a plan if you wish to fly. What I love is the tilt feature and how it grows with your child, easy to install and read direction on the car seat visible and it is in two languages. The cushions for the head is very comfortable. Highly recommend for baby on up however I already pass the baby stage carrier and purchase this after my child was already one. It can even use for infants up to 10 years old Again highly recommend ... show more
Reviewed in the United States on February 21, 2025 by artzone artzone

  • Love this car seat!
Color: Onyx Style: One4Life
Absolutely love this car seat! This is my second Britax. The click-tight system gives peace of mind and keeps the seat locked in place. It is heavy, but still super easy to install. The size if perfect for taller toddlers. My daughter loves how comfortable it is especially for long trips. The color and texture of the cushion isn’t cheap! ... show more
Reviewed in the United States on March 10, 2025 by Rix_H

  • The Best Car Seat on the Market!
Color: Glacier Graphite Style: One4Life
I recently purchased my second Britax One4Life car seat for my little one after we were in a car wreck and I am absolutely thrilled with the outstanding quality and features it offers. This car seat has truly exceeded my expectations. We will never buy a different car seat again. First and foremost, safety is paramount when it comes to a car seat, and this product delivers on that front exceptionally well. The robust construction and the advanced safety features provide me with the peace of mind that my child is secure and protected while on the road. The easy-to-adjust harness and side-impact protection are notable features that add an extra layer of safety. Installation was surprisingly straightforward. The clear and detailed instructions, along with the user-friendly design, made it a hassle-free process. The ability to securely fasten the seat with both the LATCH system and seatbelt ensures a snug fit, and the stability of the car seat is evident once installed. By far the easiest car seat to take out and install. The adjustable recline feature is a game-changer, allowing for a customized and comfortable seating position for my little one, whether they're napping or enjoying the scenery. The versatility of this car seat is impressive. It accommodates a wide range of ages and sizes, meaning it will be a reliable companion for years to come. The ability to easily transition between rear-facing and forward-facing positions is a convenience that adds to the overall value of the product. ... show more
Reviewed in the United States on November 15, 2023 by Chris

  • Quality Car seat that grows with your child
Color: Eclipse Black Style: One4Life
Great value for the money with easy installation. Quality sturdy materials with a very handy cup holder as the child is older. Comes with Newborn insert, and grows with your child, rear facing, forward facing and booster seat in one. I was really pleased with the functionality of this Car Seat
Reviewed in the United States on April 21, 2025 by Christine Slattery

  • A monster of a car seat but very solid
Color: Glacier Graphite Style: One4Life
We bought this car seat for my first son (born March 2022) and all of the hospital staff were very impressed by how well constructed it is (he had to pass the car seat test after NICU admittance day 2 for jaundice). Purchased it again for our second son due December (couldn't pass up the July sale). It fit well in my small SUV (Subaru Crosstrek) and fits about the same in our mid-size SUV (Subaru Ascent) using a foam squat pad cut in half against the back of the seat since the seats angle down (necessary to achieve proper angle for squishy newborn, not necessary for toddler or once baby has trunk control). It's not "easy" to remove and re-install but it's also fairly straightforward once you do it the first time to manage the ClickTight. It is a large and heavy seat. We used a buckle carrier from birth since this is clearly not the kind of car seat you take out and click into a stroller but that was by choice - I didn't want him in the car seat any more than necessary as a squishy newborn due to possible positional asphyxiation. First son is still rear-facing, still maximally reclined (long torso and shorter legs haha), falls asleep in it on the regular, has slept in it for 2 hours on a recent road trip which speaks to its being pretty comfortable. ... show more
Reviewed in the United States on August 16, 2024 by Rebecca Crowe

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