| Brand | Britax |
| Installation Type | Seat Belt |
| Material | Polypropylene |
| Color | Onyx Stone |
| Orientation | Forward Facing |
Add to your order
-
Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary) -
24/7 support when you need it -
Quick, easy, and frustration-free claims
- No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
- Coverage: Plan starts on the date of purchase. Drops, spills and cracked screens due to normal use covered for portable products and power surges covered from day one. Malfunctions covered after the manufacturer's warranty.
- Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. If we can’t repair it, we’ll send you an Amazon e-gift card for the purchase price of your covered product or replace it.
- Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
- Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
- No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
- Coverage: Plan starts on the date of purchase. Drops, spills and cracked screens due to normal use covered for portable products and power surges covered from day one. Malfunctions covered after the manufacturer's warranty.
- Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. If we can’t repair it, we’ll send you an Amazon e-gift card for the purchase price of your covered product or replace it.
- Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
- Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
- ONE SIMPLE PROTECTION PLAN: Simplify protection for your eligible Amazon purchases. Coverage begins immediately for eligible purchases from the past 90 days, plus all eligible future purchases (products used commercially are excluded).
- NORTON 360 DELUXE INCLUDED: Trusted digital security that keeps your devices and data safer. Includes scam detection for emails and texts ($89.99 in annual savings).
- INSTANT COVERAGE: Covers malfunctions and failures for eligible Amazon purchases, plus drops or spills for portable items. File claims right away — no waiting period.
- QUICK AND EASY CLAIMS: File in minutes at Asurion.com/amazon for fast repair or reimbursement — up to the purchase price.
- NO HIDDEN FEES. You’re covered for up to $5,000 in total claims per 12-month period. Cancel anytime – your plan renews monthly until canceled (coupons applied at checkout do not renew monthly)
Add to your order
-
Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary) -
24/7 support when you need it -
Quick, easy, and frustration-free claims
Product Protection by Asurion, LLC
- No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
- Coverage: Plan starts on the date of purchase. Drops, spills and cracked screens due to normal use covered for portable products and power surges covered from day one. Malfunctions covered after the manufacturer's warranty.
- Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. If we can’t repair it, we’ll send you an Amazon e-gift card for the purchase price of your covered product or replace it.
- Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
- Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
Product Protection by Asurion, LLC
- No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
- Coverage: Plan starts on the date of purchase. Drops, spills and cracked screens due to normal use covered for portable products and power surges covered from day one. Malfunctions covered after the manufacturer's warranty.
- Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. If we can’t repair it, we’ll send you an Amazon e-gift card for the purchase price of your covered product or replace it.
- Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
- Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
Product Protection by Asurion, LLC
- ONE SIMPLE PROTECTION PLAN: Simplify protection for your eligible Amazon purchases. Coverage begins immediately for eligible purchases from the past 90 days, plus all eligible future purchases (products used commercially are excluded).
- NORTON 360 DELUXE INCLUDED: Trusted digital security that keeps your devices and data safer. Includes scam detection for emails and texts ($89.99 in annual savings).
- INSTANT COVERAGE: Covers malfunctions and failures for eligible Amazon purchases, plus drops or spills for portable items. File claims right away — no waiting period.
- QUICK AND EASY CLAIMS: File in minutes at Asurion.com/amazon for fast repair or reimbursement — up to the purchase price.
- NO HIDDEN FEES. You’re covered for up to $5,000 in total claims per 12-month period. Cancel anytime – your plan renews monthly until canceled (coupons applied at checkout do not renew monthly)
Product Protection by Asurion, LLC
- No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
- Coverage: Plan starts on the date of purchase. Drops, spills and cracked screens due to normal use covered for portable products and power surges covered from day one. Malfunctions covered after the manufacturer's warranty.
- Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. If we can’t repair it, we’ll send you an Amazon e-gift card for the purchase price of your covered product or replace it.
- Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
- Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
Not Added
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, Onyx Stone
Return this item for free
We offer easy, convenient returns with at least one free return option: no shipping charges. All returns must comply with our returns policy.
Read the full returns policy- Go to Your Orders to start the return
- Select your preferred free shipping option
- Drop off and leave!
Purchase options and add-ons
| Maximum Weight Recommendation | 120 Pounds |
|---|---|
| Minimum Weight Recommendation | 5 Pounds |
| Maximum Height Recommended | 63 Inches |
| Rear Facing Maximum Weight | 50 Pounds |
| Forward Facing Maximum Weight | 120 Pounds |
| Rear Facing Minimum Weight | 5 Pounds |
| Forward Facing Minimum Weight | 22 Pounds |
| Installation Type | Seat Belt |
|---|---|
| Orientation | Forward Facing |
| Harness Type | 5-Point |
| Number of Height Positions | 15 |
Warranty & Support
Feedback
Product specifications
User guide
| Maximum Weight Recommendation | 120 Pounds |
|---|---|
| Minimum Weight Recommendation | 5 Pounds |
| Maximum Height Recommended | 63 Inches |
| Rear Facing Maximum Weight | 50 Pounds |
| Forward Facing Maximum Weight | 120 Pounds |
| Rear Facing Minimum Weight | 5 Pounds |
| Forward Facing Minimum Weight | 22 Pounds |
Features & Specs
| Installation Type | Seat Belt |
|---|---|
| Orientation | Forward Facing |
| Harness Type | 5-Point |
| Number of Height Positions | 15 |
Item details
| Brand | Britax |
|---|---|
| Age Range Description | Newborn to Youth |
| UPC | 652182743338 |
| Manufacturer | Britax USA |
| Unit Count | 1.0 Count |
| Best Sellers Rank |
|
| ASIN | B0C74MFCQM |
| Customer Reviews |
4.6 out of 5 stars |
Measurements
| Item Dimensions D x W x H | 20.5"D x 19.5"W x 25"H |
|---|---|
| Item Weight | 30 Pounds |
Additional details
| Material Type | Polypropylene |
|---|---|
| Color | Onyx Stone |
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Product 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.
From the manufacturer
All-In-One Car Seat
One4Life ClickTight
Grows with your child for ten years, surrounding them with trusted Britax safety.
The only 10-year car seat with ClickTight, so it's easy to install in three simple steps.
-
Install with Confidence in three simple steps
-
Pinch and lift to open seat
to gain easy access to vehicle seat belt path. No stressing or struggling
-
Buckle seat belt
Easily thread vehicle seat belt through the open belt path
-
Click it Closed!
The steel tensioner automatically tightens the seat into your vehicle, taking care of the hard work
Safety, Comfort & Convenience
-
Dishwasher-Safe Cup Holders
easily twist out for cleaning between rides.
-
Exclusive! V-Shaped Tether
with staged-release stitches helps slow and reduce forward movement during a crash
-
High-Strength Steel Frame
reinforces the seat structure to help keep it sturdy and stabilized.
-
Built-In Cooling Channels & Ventilated Mesh
improve air flow to keep your child comfortable.
Britax All-in-One and Convertible Car Seat Comparison
Britax One4Life Car Seat | Britax Emblem Car Seat | Britax Marathon Car Seat | Britax Boulevard Car Seat | Britax Advocate Car Seat | |
|---|---|---|---|---|---|
|
Customer Reviews
|
4.8 out of 5 stars 213
|
4.6 out of 5 stars 864
|
4.7 out of 5 stars 934
|
4.8 out of 5 stars 1,336
|
4.7 out of 5 stars 682
|
|
Rear-Facing Infant
| ✔ | ✔ | ✔ | ✔ | ✔ |
|
Rear-Facing Toddler
| ✔ | ✔ | ✔ | ✔ | ✔ |
|
Forward-Facing Harness
| ✔ | ✔ | ✔ | ✔ | ✔ |
|
Booster
| ✔ | ✘ | ✘ | ✘ | ✘ |
|
Max. Rear-Facing Weight
| 50 lbs | 40 lbs | 40 lbs | 40 lbs | 40 lbs |
|
Forward-Facing Harness Weight
| 65 lbs | 65lbs | 65lbs | 65lbs | 65lbs |
|
Max. Booster Weight
| 120 lbs | — | — | — | — |
|
ClickTight Installation
| ✔ | ✘ | ✔ | ✔ | ✔ |
|
Headrest/Harness Positions
| 15 | 10 | 14 | 14 | 14 |
|
Recline Positions
| 9 | 3 | 7 | 7 | 7 |
|
Side Impact Protection
| 2 Layers | 2 Layers | X | 2 Layers | 3 Layers |
|
SafeWash Cover
| Available | Available | Available | Available | Available |
From the brand
Protecting What Matters Most
As a leader in child safety technology, we’re here to give you confidence for the road ahead.
-
Our mission is to help protect what matters most by providing safe, comfortable, & easy-to-use child travel solutions. Our car seats, strollers, & accessories are designed to give you confidence for every journey.
We’ve been leading the way in child safety for over 55 years. Drawing on decades of experience, we strive to help make family travel safer & more convenient with parent-inspired features & products that prioritize child comfort.
-
Just Getting Started
-
Poplar S Convertible Car Seat
2-in-1 seat with a slim 17” design, an extended rear-facing capacity of 50 lbs, and ClickTight technology
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Toddler Transitions
-
One4Life All-in-One Car Seat
Designed for up to 10 years of use! Features ClickTight technology, Britax safety, and premium comfort
-
Big Kid Safety
-
What’s our “why”?
Our passion for child safety drives everything we do. It’s what brings us together as a team every day.
What makes our products unique?
Britax products are set apart by rigorous testing, industry-leading innovations like ClickTight installation, and convenient features that are designed to help solve everyday parenting challenges, like SafeWash fabrics.
What is ClickTight?
ClickTight is our exclusive seat belt tensioner and lockoff system. It’s designed to help take the guesswork out of car seat installation – because something so important shouldn’t be difficult.
Safety Information
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Generated from the text of customer reviewsSelect to learn more
Reviews with images
THIS CAR SEAT KEPT MY SON SAFE DURING A COLLISION!
Top reviews from the United States
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- Reviewed in the United States on October 3, 2024Color: Onyx StoneStyle: One4LifeVerified PurchaseThis car seat is the only seat my daughter will my grandson to ride in. It’s very easy to install and adjust for the correct position. The functionality of this seat is fabulous. The seat is comfortable and roomy it has been used on an 8 to 10 hour road trip and the child didn’t have any complaints. It not only looks well made it is. It is worth the expense, it is on the high end for car seats
- Reviewed in the United States on November 1, 2023Color: Onyx StoneStyle: One4LifeVerified PurchaseThis was a spectacular buy for my grandson! Easy to install and fits like a glove in my compact car. I did a lot of research and price comparisons prior to making a purchase. I compared, price point, safety, car comparability, comfort, durability, and reviews. It has the most recline range and the installation was a breeze! I struggle for over 1/2 an hour trying to transfer my grandsons carseat from his parents car to mine. The 1/2hr consisted of profuse sweating and cussing and still couldn’t securely fasten their carseat. Next step, order mine from Amazon! After several months of use I couldn’t be more happy. It cost more than some, but I could never put a price on my grandson’s comfort and safety. This carseat gave me peace of mind
- Reviewed in the United States on May 31, 2025Color: Onyx StoneStyle: One4LifeVerified PurchaseWe’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!
- Reviewed in the United States on November 21, 2024Color: Onyx StoneStyle: One4LifeVerified PurchaseThis is a strong endurance car seat. It almost takes a weight lifter to carry but it gives a huge sense of relief in case it's an emergency. I have used it since bringing baby home from the hospital. The car seat adjust easily as little one grows. I've adjusted it twice without any trouble. Baby has loved it as it cradles and puts baby to sleep. Highly recommend. I like it so much that I brought a second one for both vehicles and peace of mind.
- Reviewed in the United States on December 15, 2024Color: Onyx StoneStyle: One4LifeVerified PurchaseThis car seat is amazing! It was easy to instal and you don’t have to adjust the straps every time you take your child in and out! It is definitely worth the money. My daughter loves it and sleeps the whole time.
- Reviewed in the United States on December 30, 2023Color: Onyx StoneStyle: One4LifeVerified PurchaseThis is my FAVORITE car seat! I just got one for my newborn. I have 3 and would never use another car seat. The fabric is easy to wash, the seat is very simple to install , and they are just so heavy duty.
- Reviewed in the United States on March 8, 2026Color: Onyx StoneStyle: One4LifeVerified PurchaseWe own 2 and love both
- Reviewed in the United States on March 12, 2025Color: Onyx StoneStyle: One4LifeVerified PurchaseJust 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!
Top reviews from other countries
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RosaReviewed in Mexico on September 25, 20235.0 out of 5 stars Excelente
Color: Onyx StoneStyle: One4LifeVerified PurchaseLo volvería a comprar
Product summary presents key product information
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Product Summary: 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, Onyx Stone
From Britax
About this Item
- 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
Product Description
Options Available
Color
- Glacier Graphite
- Graphite Onyx
- Mineral Gray
- Mineral Gray 2.0
- Onyx Stone
- Parchment
- Parchment 2.0
- Raven Black
- Raven Black 2.0
- Sea Foam 2.0
- Teak
Style
- One4Life
- One4Life Slim
Important Information
Safety Information
- To learn about the safe use of car seats and correct installation, visit the <a href="https://www.nhtsa.gov/equipment/car-seats-and-booster-seats?utm_source=amazon&utm_medium=amazon-details&utm_content=nhtsa-car-seats-main" target="_blank">National Highway Traffic Safety Administration (NHTSA)</a>. Disclaimer: NHTSA doesn't endorse this item. The link is for informational purposes.
- To learn about the safe use of car seats and correct installation, visit the <a href="https://www.nhtsa.gov/equipment/car-seats-and-booster-seats?utm_source=amazon&utm_medium=amazon-details&utm_content=nhtsa-car-seats-main" target="_blank">National Highway Traffic Safety Administration (NHTSA)</a>. Disclaimer: NHTSA doesn't endorse this item. The link is for informational purposes.
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