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Britax

Britax One4Life All in One Convertible Car Seat, 3 in 1 Car Seat & Booster Seat with Easy ClickTight Installation, Extended Rear Facing Capacity, and Breathable SafeWash Fabrics — Parchment

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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, May 30
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Color: Parchment


Style: One4Life


Features

  • ALL-IN-ONE CAR SEAT: Designed to grow with your child for 10 years, this 3 in 1 car seat easily converts from a rear facing infant and toddler car seat (5-50 lbs) to a forward facing car seat with a harness (30-65 lbs) and, finally, to a high back booster seat (40-120 lbs) *Due to regulatory changes, weight and height ranges may vary by model; always follow the weight and height specifications listed in your product's user guide and on your product labels.
  • CLICKTIGHT INSTALLATION: Install with confidence in 3 easy steps: Pinch to open, thread and buckle, click it closed!
  • EXTENDED REAR-FACING CAPACITY: Accommodates children up to 50 lbs and 49 rear-facing, so your child can ride rear-facing longer
  • TRUSTED BRITAX SAFETY: This all in one car seat is equipped with a steel frame, SafeCell technology, two layers of energy management, and our patented V-shaped tether. The seat is side-impact tested according to FMVSS 213a.* It is also tested to FMVSS 213 frontal impact standards. *FMVSS 213a sets side-impact standards for children up to 40 lbs and 43 with a 5-point harness. It does NOT include standards for testing harnessed children above 40 lbs and 43 or for booster mode.
  • SAFEWASH FABRICS: No more hand-washing or waiting for the cover to air-dry; just quick and easy cleanup so you can keep moving; the car seat cover is also naturally flame-retardant with no added FR chemicals
  • EASY TO ADJUST: The 15-position no-rethread harness and headrest adjust together easily with one hand, and the 9-position recline has an easy-read indicator to help you find the best angle for your vehicle
  • PREMIUM COMFORT: Breathable knit fabrics allow airflow to help keep your precious cargo cool and comfortable*, while the silky-smooth cover and plush padding make for enjoyable rides (*Select fashions only)
  • THREE INFANT INSERTS: Help provide a better fit for infants 20 lbs and under
  • TIMELESS, SOPHISTICATED AESTHETIC: Warm, neutral fashions create a sleek, polished, and versatile look to match your lifestyle
  • 2 DISHWASHER-SAFE CUP HOLDERS: Help keep your little one's drinks or snacks within reach; easily twist out for cleaning between rides

Description

It all starts with the first ride home. Then, there’s the first family outing. The first ride to daycare. Soon, you’ll be driving them to their first play date or soccer game. Throughout every change and milestone, you can count on one constant for your journey: the Britax® One4Life® all in one convertible car seat. This 3 in 1 car seat and booster seat combo takes your child from birth to big kid with trusted Britax safety, ClickTight® technology for easy installation, and parent-approved convenience features. One4Life starts as a rear facing car seat with an extended capacity of up to 50 lbs, allowing your child to ride rear facing longer. It easily converts to a forward facing car seat (30-65 lbs) and a belt-positioning booster seat (40-120 lbs) when your child is ready. Thanks to ClickTight technology, you can install with confidence, every time. As your child grows, you can easily adjust the 15-position harness with just one hand — no rethreading required. This all in one car seat features a high-strength steel frame, SafeCell® technology, and a V-shaped tether, helping to give you peace of mind for the road ahead. The washer and dryer-friendly car seat cover is available in warm, neutral tones with a sophisticated aesthetic to match your lifestyle. Plus, it’s naturally flame-retardant with no added FR chemicals. The breathable knit fabrics allow airflow to help keep your precious cargo cool and comfortable, while the plush padding helps make rides enjoyable. With thoughtful convenience features, premium comfort, and an all in one design, you can confidently navigate every stage of the journey with just one car seat — for life. Due to regulatory changes, weight and height ranges may vary by model. Always follow the weight and height specifications listed in your product's user guide and on your product labels. Select fashions only.

Brand: Britax


Installation Type: Seat Belt


Color: Parchment


Orientation: Rear and Forward Facing


Product Dimensions: 20.5"D x 19.5"W x 25"H


Product Dimensions: ‎20.5 x 19.5 x 25 inches


Item model number: ‎E1D267G


Minimum weight recommendation: ‎5 Pounds


Maximum weight recommendation: ‎120 Pounds


Minimum height recommendation: ‎18 Inches


Maximum height recommendation: ‎63 Inches


Material Composition: ‎Steel


Care instructions: ‎Machine wash and dry


Style: ‎One4Life


Number of reclining positions: ‎15


Batteries required: ‎No


Orientation: ‎Rear and Forward Facing


Rear-facing minimum child weight: ‎5 Pounds


Rear-facing maximum child weight: ‎50 Pounds


Forward-facing minimum child weight: ‎30 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: Saturday, May 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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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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