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Britax

Britax One4Life ClickTight All-in-One Car Seat, Eclipse Black

  • Based on 1,163 reviews
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Color: Eclipse Black


Style: One4Life


Features

  • 10 YEARS OF USE: The Britax One4Life convertible 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, and patented V-shaped tether
  • 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)

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: Eclipse Black


Orientation: Rear Facing


Product Dimensions: ‎20.5 x 19.5 x 25 inches


Item model number: ‎E1C902C


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

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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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Similar Products

Top Amazon Reviews

    • Favorite seat! Read for fit tips
Color: Glacier Graphite Style: One4Life
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
    • The only car seat brand we will ever buy for our kiddos! Only cons are the weight and width.
Color: Eclipse Black Style: One4Life
I have recommended this car seat to sooo many of my friends! If you have ever used the Click Tight system you know exactly why! This is the absolute easiest car seat to install/remove and you get the tightest installation EVER! I really love that the car seat is so sturdy and well built! There are so many safety features built in too! We upgraded to the One4Life with our last kiddo from the Advocate. One of the best features that I didn’t know I needed was the cup holders! I love that Britax added them onto this car seat! This car seat has so many pros! There are a few cons however in our opinion. The car seat is VERY heavy (which is great for safety but heavy to move). The other con is that it is very wide (again this is great for safety but we are not able to go 3 car seats wide in the backseat because of this). Even with these 2 cons we will never use another brand of car seat! ... show more
Reviewed in the United States on July 17, 2025 by Noël
    • The best carseat bar none
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
    • Perfect Fit for My Audi e-tron and Incredible Quality! ⭐⭐⭐⭐⭐
Color: Parchment Style: One4Life Slim
Review Image by Jules Jules
Review Image by Jules Jules
Review Image by Jules Jules
Perfect Fit for My Audi e-tron and Incredible Quality! ⭐⭐⭐⭐⭐ The Britax One4Life Slim has been an amazing upgrade for our car. It fits perfectly in my Audi e-tron, leaving plenty of space without feeling bulky, which is exactly what I needed. Installation was straightforward, the seat feels solid and secure, and the slimmer profile makes a huge difference in a more compact backseat layout. My child is comfortable, the padding feels premium, and the adjustability is excellent as they grow. I also love knowing this seat will last for years thanks to the all-in-one design. The fabric is easy to clean, the harness adjusts smoothly, and everything about it feels thoughtfully engineered. If you want a high-quality car seat that offers top-tier safety, comfort, and a great fit in smaller or electric vehicles like the e-tron, this is a fantastic choice. Highly recommend! ... show more
Reviewed in the United States on November 7, 2025 by Jules Jules
    • recommend
Color: Raven Black Style: One4Life Slim
Thai car seat is great, i love the padding, place of cup holders as they are toward the do t and do t take room away from the beady seat. The buckle is great quality, it’s very easy for me to buckle and unbuckle.
Reviewed in the United States on December 14, 2025 by Lena
    • Yes yes yes
Color: Glacier Graphite Style: One4Life
I love this car seat and am getting ready to purchase a 2nd one for my daughter. I love that my kids will only need one car seat since this one grows with them. I love that it has a metal frame foe safety. It's comfortable and easy to install. I like how my kids can remain rear facing for a longer period of time. It is heavy but I feel that it's very safe, comfortable and durable for my child. I like how I can strip it down and wash everything. This is the brand that I will stick with. ... show more
Reviewed in the United States on November 28, 2025 by Em
    • Nice seat but Splurge on the swivel model instead…
Color: Parchment Style: One4Life Slim
Works great and secures toddler nicely. Easy to adjust. Also great for travel as it Fits down the airplane aisle on the Britax cart I bought separately. I have washed the cover and it came out nicely…grandson loves the cup holders which are larger than cup holders on other seats we looked ant. The seat looks very comfortable. Big negative is the seat is stationary. I wish I had spent the extra money and bought the car seat that swivels. Lifting a toddler into the seat and attempting to buckle them in is difficult. This is a car seat in grandmothers cars used a few times a week so I thought the swivel feature would not be missed. Highly recommend you Splurge on the swivel feature. ... show more
Reviewed in the United States on August 7, 2025 by KU Fan
    • Easy install
Color: Sea Foam Style: One4Life Slim
Easy install! Super quality nice car seat. Definitely recommend
Reviewed in the United States on December 28, 2025 by April

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