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BRITAX

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 1,038 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Jun 21
Order within 8 hours and 35 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: Saturday, Jun 21

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

    • Very happy with this car seat!!
Color: Glacier Graphite Style: One4Life
Review Image by Kay. Kay.
My little one outgrew his infant car seat and I looked for months trying to find one to suit our needs. Most importantly I was looking for additional safety features! Pros: For my Honda odyssey it fits better than my other seats (graco and Evenflo). Installation- this always gives me anxiety because it usually takes me forever to install and I never get it snug enough. The Evenflo 360 is a nightmare to install for me. This was AMAZING. I was literally telling so many moms about the installation and how fast, easy and SECURE it was. Seat cushion for younger babies has very obvious instructions on weight so you don’t have to look back in the manual. The level indicator is available to see on both sides which is a big win for 2 car seats. Comfort- baby was struggling to nap in his old seat and spent hours crying. I moved him into this one and though he still has taken some time to settle in he’s actually napped for me in the seat. I truly believe he’s more comfortable. Cons: it’s very heavy! (Honestly not really a con for me, but I know for some it can be). I haven’t been able to adjust my daughter’s seat to a more comfortable recline position for her comfort without keeping it within the level indicator. I need to look into this further since she’s complaining that she feels she’s sitting too far forward. I have 2 of these seats rear facing for my 10 month old who is 20 pounds and daughter 4 years and 30 pounds. Looking forward to long rear facing and safety with these seats ... show more
Reviewed in the United States on April 21, 2025 by Kay. Kay.
    • Great Car Seat!!!
Color: Iris Onyx Style: One4Life
I looked heavily into purchasing a car seat before deciding what car seat is the best for my baby. My biggest concerns were: 1. Safety 2. Longevity (Weight/height capacities) 3. Price With those 3 things in mind I ultimately decided on the Britax One4Life. It is rated one of the safest car seats in US and European standards. It has different modes that will grow with your child up to booster seat mode which supports up to 120 pounds. Lastly the price tag is a little hefty, but with the idea that I won't have to buy a booster seat it made sense to go with this one. My daughter has been using it for about 8 months now, and we absolutely love it! ... show more
Reviewed in the United States on May 24, 2025 by Leonor Lopez
    • Favorite car seat for my (soon to be) three kids!
Color: Onyx Stone Style: One4Life
We’ve bought five of these because it is our favorite car seat. I’ve also recommended it to at least three friends. They are so easy to install and the kids are comfortable in them. I really like that the rear facing weight limit is so high because I plan to keep my kids rear facing as long as I can. My one complaint is that the cup holders pop off easily, but in the grand scheme that isn’t that big of an issue. Will continue to buy these as we have more kids! ... show more
Reviewed in the United States on May 31, 2025 by Mimie Hull
    • Highly recommend
Color: Jade Onyx Style: One4Life
Review Image by artzone artzone
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
    • Great product!
Color: Cool Flow Carbon Style: One4Life
Great grow with me car seat! Easy to adjust as they grow, cup holders remove easy for cleaning as dot he cushions. Easy install and to move form car to car if needed. Rear and front facing for when they get bigger, Britax has been good to us as a family!
Reviewed in the United States on May 29, 2025 by Kelsey H
    • Quality and not cancer causing
Color: Eclipse Black Style: One4Life
Love how versatile this is! Cup holders are great and it’s not treated with flame retardant that’s cancer causing, but has a special flame resistant woven material instead. One of the biggest reasons we’ll always choose britax.
Reviewed in the United States on June 1, 2025 by Mary P.
    • Yup, Buy it!
Color: Iris Onyx Style: One4Life
Very happy with this carseat! This is the 3rd one we've bought. We purchased and returned two as they felt cheaply made, unsafe and we didn't like the fit as well as how much they moved around after being tightly installed. This one is the exact opposite! It feels incredibly well made and safe, it doesn't budge from its position tightened down in the car, our 8 month old fits great in it and I'm happy with the amount of padding around the head. Great quality, great fit, durable, manufacturer takes the safety of your child seriously! Highly recommend! ... show more
Reviewed in the United States on April 23, 2025 by Katie
    • Very sturdy but hard to use click right difficult to click into place
Color: Eclipse Black Style: One4Life
I have two of this exact car seat. Both have issue with shoulder straps being even. Both car seat shoulder straps one is tighter than the other when in place on the child. Cup holders remove can be washed easily. The click tight feature to snap in place with the seatbelt are hard to snap in place if you have seat belt tight enough in my opinion. But overall very sturdy, take lbs a high amount of weight for child car seat. Has every seat option you would need as child grows. Easy push button to adjust the should height. Heavy car seat. ... show more
Reviewed in the United States on January 12, 2025 by Kristen

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