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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, Machine-Washable Fabric, Iris Onyx

  • Based on 861 reviews
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Availability: Only 5 left in stock, order soon!
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Arrives Friday, Feb 7
Order within 11 hours and 52 minutes
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Color: Iris Onyx


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 seatbelt, and click the seat closed
  • 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
  • PREMIUM PADDING AND COMFORT: The built-in cooling channels and ventilated mesh improve air flow to keep your child comfortable during every trip
  • 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 is safe to machine wash and dry; fabric and foam construction is naturally flame retardant

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: Iris Onyx


Orientation: Forward Facing


Product Dimensions: ‎20.5 x 19.5 x 25 inches


Item model number: ‎E1C903Y


Minimum weight recommendation: ‎5 Pounds


Maximum weight recommendation: ‎120 Pounds


Maximum height recommendation: ‎63 Inches


Material Type: ‎Polypropylene


Material Composition: ‎steel


Care instructions: ‎Machine Wash


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: Friday, Feb 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


  • 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

  • Extremely Satisfied, No Complaints
Color: Eclipse Black Style: One4Life
This car seat has excellent safety rating. This is why my husband and I chose it. Thick padding, and bulky. Some might not like how heavy it is, but it makes me feel at ease knowing our little one is safe. Multiple settings for incline, great for long car rides. The cup holders are removable, great for washing. Overall it has a slick black look with easy, but safe functionality. ... show more
Reviewed in the United States on January 11, 2025 by Amazing car seat! It is on the heavier side, but would rather it be heavy knowing it’s safe. You are also able to take in on an airplane, not all car seats have this feature. The installment is super quick and simple. The padding is thick, ensuring your little one is comfortable.

  • 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

  • Great investment in the safety of your child
Color: Eclipse Black Style: One4Life
Absolutely love this car seat. It is HEAVY, so you don’t want to have to transfer this one from car to car, or travel with it (which I have done). But it’s very easy to install and it’s secure once in. Easy to grow with the child, which is a huge plus. Cup holders come out for easy cleaning which could be a pro or con depending on your child. lol but they do lock into place with a twist. Overall it’s a great investment. ... show more
Reviewed in the United States on January 30, 2025 by Abby

  • Quick and easy to install!
Color: Jade Onyx Style: One4Life
I was recently in a wreck and had to buy a new car seat. This is the best car seat you could buy, we have two other brand car seats that are very hard to get tightened. This click tight system is the way to go. Seems very comfortable for my toddler and is very easy for me to move from one car to the next. Already had to take the cover off to wash it and it was easy to get off and back on. Best car seat would recommend to anyone! Love the fact that my son car rear face up to 50 pounds in this car seat as well and his legs are not cramped up. ... show more
Reviewed in the United States on September 9, 2024 by Gabrielle Duhl

  • high quality and user friendly
Color: Parchment Style: One4Life Slim
I spent a lot of time researching about car seats, about proper fitment, etc, and it ended up (admiringly not with these Britax seats) helping my kids survive a big accident. I had to replace the 3 car seats involved in the accident, and I got these Britax One4Life Slims after very careful consideration. After putting them in my new SUV I can say these have to be the easiest carseats to install with the car's seatbelts or with ISOFIX! The KILLER feature is the ClickTight mechanism which makes your life easy as far as making sure the seat is tightly secured, seatbelt or ISOFIX alike. It pretty much eliminates a lot of potential for user error, and makes the seats super tightly secured - they hardly move even if pushed with a lot of force. I am completely sold on these, and will be buying 3 more for use with our summer car in Europe. I definitely recommend them. ... show more
Reviewed in the United States on January 18, 2025 by Kiriakos Georgiou

  • nice seat
Color: Onyx Style: One4Life
bought for my daughters new baby. she says the grand baby loves it and it works great. also easy to install in the car.
Reviewed in the United States on January 30, 2025 by Richard Aiken

  • Love this car seat, don’t love material
Color: Cool N Dry Moonstone Style: One4Life
This is our second One 4 Life click right car seat and I absolutely love the seat. So easy to install, very secure, and kids seem to be very comfortable and happy in them. My only recommendation is to not buy this specific color way. This fabric feels different and not as comfortable as the all charcoal cool n’ dry we have for our older child. I would recommend that more than this one. ... show more
Reviewed in the United States on September 21, 2024 by Lindsay Strick Lindsay Strick

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