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  • 6 VIDEOS
  • 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
  • Britax One4Life ClickTight Car Seat , 10 Years of UseBritax Child Safety

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

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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

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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

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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

Britax One4Life ClickTight Car Seat

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.

One4Life ClickTight 10 Years of Use
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

Safety, Comfort & Convenience

Britax All-in-One and Convertible Car Seat Comparison

Britax One4Life Car Seat

Buying Options

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Buying Options
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

Previous page

  2. 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.

  3. Infant Car Seat
    Travel System
    Stroller
    Bassinet

    Just Getting Started

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  4. 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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    One4Life
    ARB

    Toddler Transitions

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  6. One4Life All-in-One Car Seat

    Designed for up to 10 years of use! Features ClickTight technology, Britax safety, and premium comfort

  7. Grow With You
    Skyline
    Highpoint
    View n Go

    Big Kid Safety

    Visit the Store

  8. 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.

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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

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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

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.

Important Information

Safety Information

  1. 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.
  2. 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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