---
product_id: 690342768
title: "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"
brand: "britax"
price: "VT314036"
currency: VUV
in_stock: false
reviews_count: 13
url: https://www.desertcart.vu/products/690342768-britax-one4life-slim-all-in-one-car-seat-10-years
store_origin: VU
region: Vanuatu
---

# ClickTight 3-step installation 15-position no-rethread harness 17.5” SpaceSaver design fits 3-across* 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

**Brand:** britax
**Price:** VT314036
**Availability:** ❌ Out of Stock

## Summary

> 🚗 Elevate every ride with the Britax One4Life Slim — safety, style, and space-saving all-in-one!

## Quick Answers

- **What is this?** 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 by britax
- **How much does it cost?** VT314036 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/690342768-britax-one4life-slim-all-in-one-car-seat-10-years)

## 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

- • **Slim design, maximum fit:** 17.5” width designed to fit 3 across* without sacrificing comfort or safety.
- • **Safety engineered to the core:** High-strength steel frame, SafeCell® technology, and patented V-shaped tether.
- • **Grows with your child for 10 years:** From rear-facing infant to high-back booster, one seat does it all.
- • **Effortless, rock-solid installation:** ClickTight system locks in safety with just 3 easy steps—no guesswork.
- • **Premium comfort meets eco-conscious style:** Soft, machine-washable recycled fabric with natural flame resistance.

## Overview

The Britax One4Life Slim All-in-One Car Seat is a versatile, long-lasting solution that adapts from rear-facing infant seat to forward-facing booster for kids up to 120 lbs. Featuring a slim 17.5” SpaceSaver design, it fits three across in many vehicles without compromising Britax’s renowned safety standards. Installation is a breeze with the patented ClickTight system, ensuring a secure fit every time. Crafted with premium, machine-washable recycled fabric and equipped with advanced safety tech like a high-strength steel frame and SafeCell® crumple zones, this seat combines comfort, convenience, and peace of mind for parents and kids alike.

## 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.

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

- 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 mélange 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DPLJLGG7 |
| Batteries required | No |
| Best Sellers Rank | #3,923 in Baby ( See Top 100 in Baby ) #19 in Convertible Child Safety Car Seats |
| Care instructions | Machine wash and dry cover |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,271) |
| Forward-facing maximum child weight | 120 Pounds |
| Forward-facing minimum child weight | 30 Pounds |
| Harness type | 5-Point |
| Item Weight | 28 pounds |
| Item model number | E1D437F |
| Material Composition | Plastic and Steel |
| Material Type | Alloy Steel, Plastic |
| Maximum height recommendation | 49 Inches |
| Maximum weight recommendation | 120 Pounds |
| Minimum height recommendation | 18 Inches |
| Minimum weight recommendation | 5 Pounds |
| Number of reclining positions | 15 |
| Orientation | Rear and Forward Facing |
| Product Dimensions | 18.5 x 17.5 x 24.5 inches |
| Rear-facing maximum child weight | 50 Pounds |
| Style | One4Life Slim |

## Product Details

- **Brand:** Britax
- **Color:** Sea Foam
- **Installation Type:** Seat Belt
- **Material:** Alloy Steel, Plastic
- **Orientation:** Rear and Forward Facing

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/412g+J5wxeL.jpg)
![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 - Image 2](https://m.media-amazon.com/images/I/51ITwG4to0L.jpg)
![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 - Image 3](https://m.media-amazon.com/images/I/51IX-CQ3kEL.jpg)
![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 - Image 4](https://m.media-amazon.com/images/I/51OQgS1KKGL.jpg)
![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 - Image 5](https://m.media-amazon.com/images/I/51dH4MUB4hL.jpg)

## 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 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
- 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: 2026-02-16*