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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, Performance Fabric, Cool N Dry Moonstone

  • Based on 1,170 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Nov 30
Order within 20 hours and 53 minutes
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Style: One4Life


Color: Cool N Dry Moonstone


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 QUILTED PADDING: Cool N Dry fabric improves air flow for a cooler ride and wicks away moisture to help keep your child dry
  • SAFETY YOU CAN TRUST: Equipped with a steel frame, SafeCell(TM) crumple zone, patented V-shaped tether, and two layers of energy management

Description

Enjoy safe travels from birth to big kid with the britax one4life convertible 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. 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 N Dry Moonstone


Orientation: Rear Facing


Product Dimensions: ‎20.5 x 19.5 x 25 inches


Item model number: ‎E1C904K


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 and dry cover


Style: ‎One4Life


Number of reclining positions: ‎15


Batteries required: ‎No


Orientation: ‎Rear 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


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 30

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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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • I love
Style: One4Life Slim Color: Mineral Gray
Easy to install. A lot of room for my son. Feels safe and tight !
Reviewed in the United States on November 13, 2025 by marissa
    • Best carseat
Style: One4Life Color: Jade Onyx
Absolutely love this car seat. Lots of cushion.. would definitely purchase again if I have another baby.
Reviewed in the United States on November 10, 2025 by Tori
    • With every penny!
Style: One4Life Color: Jade Onyx
LOVE LOVE LOVE! Installs in seconds. No need to spend forever tightening car anchors or straps. Easy to clean and comfortable. Love that the cup holders can be removed for easy clean up. Super convenient to move from one car to another.
Reviewed in the United States on October 24, 2025 by Nicole A
    • Britax is a favorite once again
Style: One4Life Slim Color: Sea Foam
Color as expected, easy to install, slightly heavy but we bought two so we won’t need to switch from one car to another anyway
Reviewed in the United States on November 1, 2025 by Jessica Lee James
    • The best carseat bar none
Style: One4Life Color: Jade Onyx
This is the most secure carseat that I’ve had! The clicktight option takes the seatbelt and pulls it taunt. This carseat won’t budge a millimeter even if pushed/pulled/shaken. Easy to set up. Heavier than other carseats but that is a good thing for structure.
Reviewed in the United States on October 12, 2025 by Bk
    • Great fit in car and for our granddaughter
Style: One4Life Color: Cool N Dry Moonstone
Great car seat
Reviewed in the United States on November 1, 2025 by Kimberly M.
    • Peace of mind with only slight aggravation
I love this car seat! It’s super soft and comfortable, literally seems like my kid is sitting on a cloud. It’s definitely on the heavier side so you want it to permanently live where you install it if possible (but that’s to be expected from a car seat this size). My only qualm is that the straps get twisted just about every time I go to put my kid in it, which is more inconvenient than anything. All in all, I have zero questions or worries when it comes to my child being safe in this seat. ... show more
Reviewed in the United States on November 13, 2025 by MayTheSchwartzBeWithYou
    • Favorite seat! Read for fit tips
Style: One4Life Color: Glacier Graphite
Review Image by RaeMars23 RaeMars23
My car seat hater enjoys the car much more in this than his infant seat. My 3 year old has one too and we love how comfortable they are, the less strict accident policy (had to replace a Graco extend 2 fit twice in 6 months bc of their replace in any and all accidents policy), that you can machine wash the cover with light detergent and how easy they are to install. Very high quality car seat that's very easy to adjust! CARSEATS WILL NOT PROTECT YOUR CHILD IF USED INCORRECTLY: -Top of chest clip should be level with armpits -Straps should come from below the shoulders rear facing and above the shoulders for forward facing -Slack should be removed from the hips, then tighten just enough so you're unable to pinch the straps at the shoulder vertically -DO NOT add any inserts, strap covers or head positioners that didn't come with your seat, they are not crash tested for your seat and will void the warranty in the case of an accident -Nothing should be attached to the seat or its straps (like binky clips, toys etc) -Wash per your manual -Rear face until absolute minimum of 2, it's their bone development that matters most -If you go see someone to help you install your seat make sure they are CPST (Child Passenger Safety Technician) -READ YOUR MANUAL) The group Car seat Safety on Facebook is extremely helpful ... show more
Reviewed in the United States on July 16, 2025 by RaeMars23 RaeMars23

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