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BRITAX

Britax One4Life Slim All-in-One Car Seat, 10 Years of Use, 17.5” SpaceSaver Design, Converts from Rear-Facing Infant Car Seat to Forward-Facing Booster Seat, ClickTight Installation, Sea Foam

    • Based on 912 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Apr 13
Order within 10 hours and 1 minute
Available payment plans shown during checkout

Color: Sea Foam


Style: One4Life Slim


Features

  • All-in-One Car Seat: One4Life(R) Slim is a convertible and harness-2-booster seat in one! It easily converts from a rear-facing infant and toddler seat (5-50 lbs.) to a forward-facing seat (30-65 lbs.) to a high-back booster seat (40-120 lbs.)
  • ClickTight(R) Installation: Install with confidence in 3 easy steps: pinch to open, thread and buckle, click it closed!
  • SpaceSaver(TM) Design: Slim outside, spacious inside! The 17.5 seat is designed to fit 3 across without compromising on trusted Britax safety and premium comfort *Britax cannot guarantee 3-across installation fitment in all vehicles
  • Premium Car Seat Cover: Features a soft knit fabric with woven melange accents that are made from recycled polyester; the cover is safe to machine-wash and dry and naturally flame retardant with no added FR chemicals
  • Trusted Britax Safety: Features a patented V-shaped tether, SafeCell(R) technology, a high-strength steel frame, and two layers of energy management
  • Comfortable Rides: This slim car seat includes soft comfort pads, built-in mesh cooling channels, three infant inserts, plush padding, and a tag-free headrest
  • 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 correct angle for your vehicle
  • Slide-Out Cup Holders: The dishwasher-safe cup holders slide out with ease for convenient cleaning and click back into place for a secure attachment during rides
  • Accessible Color-Coded Belt Paths: Make it easy to route the seat belt through the correct path for each car seat mode
  • Hassle-Free Cleanup: Extra space between the shell and base means you can clean under the seat with ease and with minimal grooves in the seating area and base, you can wipe it down with no fuss

Description

The One4Life(R) Slim all-in-one car seat takes your child from birth to big kid with trusted Britax safety, ClickTight(R) installation, and a slim SpaceSaver(TM) design. As a convertible and harness-2-booster seat in one, it grows with your child for 10 years. It starts rear-facing with an extended capacity of up to 50 lbs., so your child can ride rear-facing longer. It easily converts to forward-facing toddler mode (up to 65 lbs.) and high-back belt-positioning booster mode (up to 120 lbs.) when your child is ready. With a slim outside and spacious inside, the 17.5” seat is designed to fit 3 across without compromising safety and comfort. ClickTight helps you install with confidence, every time. The base and shell are easy to wipe down for hassle-free cleanup. The car seat cover is safe to machine wash and dry, and it’s naturally flame-retardant with no added FR chemicals. One4Life Slim features a high-strength steel frame, a SafeCell(R) crumple zone, and a V-shaped tether. As your child grows, you can easily adjust the 15-position no-rethread harness and headrest with one hand. With cooling channels, premium padding, three infant inserts, and built-in armrests, your child will love every ride. Britax cannot guarantee 3-across fitment in all vehicles.

Brand: BRITAX


Installation Type: Seat Belt


Color: Sea Foam


Orientation: Rear and Forward Facing


Product Dimensions: 18.5"D x 17.5"W x 24.5"H


Product Dimensions: ‎18.5 x 17.5 x 24.5 inches


Item model number: ‎E1D437F


Minimum weight recommendation: ‎5 Pounds


Maximum weight recommendation: ‎120 Pounds


Minimum height recommendation: ‎18 Inches


Maximum height recommendation: ‎49 Inches


Material Composition: ‎100% plastic


Care instructions: ‎Machine wash and dry cover


Style: ‎One4Life Slim


Number of reclining positions: ‎15


Batteries required: ‎No


Orientation: ‎Rear and Forward Facing


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: ‎28 pounds


Country/Region of origin: ‎China


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Apr 13

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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Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • 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
    • 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.
    • Safest and easiest to install
Color: Glacier Graphite Style: One4Life
By far the best car seat we have purchased. My husband is a police officer and a car seat technician he was thrilled when it took 3 minutes to install and is extremely sturdy. There is plenty of comfort for our 2 year old and we are excited to have him grow with it.
Reviewed in the United States on March 10, 2025 by Hayna
    • Love this car seat!
Color: Onyx Style: One4Life
Absolutely love this car seat! This is my second Britax. The click-tight system gives peace of mind and keeps the seat locked in place. It is heavy, but still super easy to install. The size if perfect for taller toddlers. My daughter loves how comfortable it is especially for long trips. The color and texture of the cushion isn’t cheap! ... show more
Reviewed in the United States on March 10, 2025 by Rix_H
    • Great seat!!
Color: Iris Onyx Style: One4Life
Could not say enough good things about this seat! Absolutely love the color and durability of the seat! The two cupholders that come with it can be taken out and cleaned. Fabric easy to remove and clean and place back on. Easy to install. Slightly heavy.
Reviewed in the United States on March 4, 2025 by Anna
    • Definitely worth it
Color: Onyx Stone Style: One4Life
Just switched from our Doona to this since our daughter grew out of it. It was easy to install and our daughter is snug and comfy in it. It feels nice and secure installed in the car so I know she’ll be safe in it. We got this during prime day and it will grow with her as she does, so it was a great price! Overall we love it! ... show more
Reviewed in the United States on March 12, 2025 by PMarie
    • 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
    • Love this car seat, don’t love material
Color: Cool N Dry Moonstone Style: One4Life
Review Image by Lindsay Strick Lindsay Strick
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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