---
product_id: 537989302
title: "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, Iris Onyx"
brand: "britax"
price: "VT445009"
currency: VUV
in_stock: false
reviews_count: 8
url: https://www.desertcart.vu/products/537989302-britax-one4life-convertible-car-seat-10-years-of-use-from
store_origin: VU
region: Vanuatu
---

# 4-in-1 convertible configurations 15-position headrest & harness adjust together Steel frame + SafeCell crumple zone 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, Iris Onyx

**Brand:** britax
**Price:** VT445009
**Availability:** ❌ Out of Stock

## Summary

> 🚗 Elevate every ride with the only car seat your child will ever need!

## Quick Answers

- **What is this?** 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, Iris Onyx by britax
- **How much does it cost?** VT445009 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/537989302-britax-one4life-convertible-car-seat-10-years-of-use-from)

## Best For

- britax enthusiasts

## Why This Product

- Trusted britax brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Custom Comfort on the Fly:** 15-position headrest and harness adjust simultaneously—no rethreading, no hassle.
- • **Safety That Speaks Volumes:** Steel frame, patented V-shaped tether, and dual energy management layers for peace of mind.
- • **Clean & Cool Rides Guaranteed:** Machine-washable, flame-retardant cover plus ventilated mesh for all-day comfort.
- • **One Car Seat, 10 Years of Safety:** From newborn to big kid—5 to 120 lbs, no upgrades needed.
- • **Effortless Installation with ClickTight:** Install with confidence in seconds—no guesswork, just click and go.

## Overview

The Britax One4Life Convertible Car Seat is a premium all-in-one solution designed to grow with your child from 5 to 120 pounds and up to 63 inches tall. Featuring 4 versatile configurations—from rear-facing infant to forward-facing booster—this seat combines advanced safety tech like a steel frame, SafeCell crumple zone, and patented tether with user-friendly features such as ClickTight installation, a 15-position adjustable headrest and harness, and a machine-washable, flame-retardant cover. With 9 recline positions and built-in cooling channels, it ensures comfort and security for a decade of worry-free travel.

## 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.

Review: Favorite seat! Read for fit tips - 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
Review: The only car seat brand we will ever buy for our kiddos! Only cons are the weight and width. - 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!

## Features

- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C74PC39G |
| Age Range Description | Newborn to Youth |
| Best Sellers Rank | #3,908 in Baby ( See Top 100 in Baby ) #19 in Convertible Child Safety Car Seats |
| Brand | Britax |
| Color | Iris Onyx |
| Customer Reviews | 4.7 out of 5 stars 1,269 Reviews |
| Forward Facing Maximum Weight | 120 Pounds |
| Forward Facing Minimum Weight | 22 Pounds |
| Harness Type | 5-Point |
| Installation Type | Seat Belt |
| Item Dimensions D x W x H | 20.5"D x 19.5"W x 25"H |
| Item Height | 25 inches |
| Item Weight | 30 Pounds |
| Manufacturer | Britax USA |
| Material | Polypropylene |
| Material Type | Polypropylene |
| Maximum Height Recommended | 63 Inches |
| Maximum Weight Recommendation | 120 Pounds |
| Minimum Weight Recommendation | 5 Pounds |
| Number of Height Positions | 15 |
| Orientation | Forward Facing |
| Product Dimensions | 20.5"D x 19.5"W x 25"H |
| Rear Facing Maximum Weight | 50 Pounds |
| Rear Facing Minimum Weight | 5 Pounds |
| UPC | 652182743369 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Britax
- **Installation Type:** Seat Belt
- **Material:** Polypropylene
- **Color:** Iris Onyx
- **Orientation:** Forward Facing

## Images

![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, Iris Onyx - Image 1](https://m.media-amazon.com/images/I/71nuP3ILu8L.jpg)
![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, Iris Onyx - Image 2](https://m.media-amazon.com/images/I/81BHAqOLG-L.jpg)
![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, Iris Onyx - Image 3](https://m.media-amazon.com/images/I/81GOwq00d6L.jpg)
![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, Iris Onyx - Image 4](https://m.media-amazon.com/images/I/81Or5PDN06L.jpg)
![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, Iris Onyx - Image 5](https://m.media-amazon.com/images/I/81QBYrVIx4L.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Favorite seat! Read for fit tips
*by R***3 on July 16, 2025*

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

### ⭐⭐⭐⭐⭐ The only car seat brand we will ever buy for our kiddos! Only cons are the weight and width.
*by N***L on July 17, 2025*

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!

### ⭐⭐⭐⭐⭐ The best carseat bar none
*by B***K on October 12, 2025*

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.

## Frequently Bought Together

- 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, Iris Onyx
- Britax Anti-Rebound Bar Accessory - Compatible with Britax One4Life Car Seats , Black
- Britax Car Seat Waterproof Liner - Moisture Wicking Fabric + No Slip Grip + Machine Washable + Crash Tested

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-01-23*