Britax One4Life all-in-one convertible car seat in Mineral Gray with ClickTight technology
Britax® One4Life® All-in-One Car Seat, Mineral Gray
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Britax® One4Life® All-in-One Car Seat, Mineral Gray

17 ratings
Britax® One4Life® All-in-One Car Seat, Mineral GrayBritax One4Life All in One Car Seat Mineral GrayBritax One4Life All in One Car Seat ParchmentBritax One4Life All in One Car Seat Raven Black
Actual ColorMineral Gray-Out of stock

Key item features

  • ALL-IN-ONE CAR SEAT: Designed to grow with your child for 10 years, easily converting from a rear-facing infant and toddler seat (5-50 lbs) to a forward-facing seat with a harness (30-65 lbs) and, finally, to a high-back booster (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 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.

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Customer ratings & reviews

4.9 out of 5 stars
stars
17 ratings12 reviews
How item rating is calculated
  1. 5 stars94% (16)
  2. 4 stars0% (0)
  3. 3 stars6% (1)
  4. 2 stars0% (0)
  5. 1 star0% (0)

Reviews summary

Pros

  • : Provides ample room for kids and easy transfer.
  • : Process is relatively easy and secure.
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Showing 1-3 of 12 reviews

Apr 30, 2026
Reviewer name: martine
Top Reviewer
Walmart Associate
Item details
Color: Mineral Gray
Sold byBritax Child Safety, Inc.Delivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Perfect child seat 0-10 years

This review text is styled with strikethrough formatting

It's the perfect child car seat for newborn yo 10 years old, lots of safety measures in place to keep your child safe and comfortable when traveling in the vehicle unfortunately it arrived too late for me but would highly recommend,

About this review:Walmart fulfilled this order and the fulfillment issues were not the fault of the seller.
Incentivized Review
Helpful?5RDFNW6LQFGH18891072460
Apr 25, 2026
Reviewer name: martine
Top Reviewer
Walmart Associate
Item details
Color: Raven Black
Sold byBritax Child Safety, Inc.Delivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

A child seat to grow with the child

This review text is styled with strikethrough formatting

It's a great product if it didn't arrive damaged via the shipper so I've ordered a replacement, yes I would highly recommend just unfortunate the circumstance it arrived in, not blaming the company just the shipper

About this review:Walmart fulfilled this order and the fulfillment issues were not the fault of the seller.
Incentivized Review
Helpful?5RDFNW6LQFGH18891072460
May 26, 2026
Reviewer name: Noelle
Item details
Color: Raven Black
Sold byBritax Child Safety, Inc.Delivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great Seat

I only use Britax due to the high rear facing limits and safety ratings. The installation takes some learning but easier when you get used to it. It's a heavy seat and not slim, so I wouldn't use it if I had multiple children or if I was taking a seat in and out. I only have one child and can invest in a seat like this. I would use Britax over and over again.

Incentivized Review
Helpful?5RDFNW6LQFGH18891072460
Current price is $439.99
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Packaging note:

Ships in the manufacturer's original packaging, which may reveal the contents.