---
product_id: 452951827
title: "Maxi-Cosi Pria Max All-in-One Convertible Car Seat, Rear Facing Car Seat (4-40 lbs), Forward Facing Car Seat (22-65 lbs), High Back Booster Seat (40-100 lbs), Pure COSI, Essential Graphite"
brand: "maxi-cosi"
price: "¥114235"
currency: JPY
in_stock: true
reviews_count: 8
category: "Maxi Cosi"
url: https://www.desertcart.jp/products/452951827-maxi-cosi-pria-max-all-in-one-convertible-car-seat
store_origin: JP
region: Japan
---

# 3-in-1 convertible design 1-click LATCH installation 1-handed magnetic ClipQuik buckle Maxi-Cosi Pria Max All-in-One Convertible Car Seat, Rear Facing Car Seat (4-40 lbs), Forward Facing Car Seat (22-65 lbs), High Back Booster Seat (40-100 lbs), Pure COSI, Essential Graphite

**Brand:** maxi-cosi
**Price:** ¥114235
**Availability:** ✅ In Stock

## Summary

> 🚗 Elevate every ride with the Maxi-Cosi Pria Max — comfort, safety, and style that grows with your child!

## Quick Answers

- **What is this?** Maxi-Cosi Pria Max All-in-One Convertible Car Seat, Rear Facing Car Seat (4-40 lbs), Forward Facing Car Seat (22-65 lbs), High Back Booster Seat (40-100 lbs), Pure COSI, Essential Graphite by maxi-cosi
- **How much does it cost?** ¥114235 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/452951827-maxi-cosi-pria-max-all-in-one-convertible-car-seat)

## Best For

- maxi-cosi enthusiasts

## Why This Product

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

## Key Features

- • **PureCosi Comfort:** Luxuriously soft, fire-retardant-free fabrics and plush padding keep your child cozy on every ride.
- • **Effortless Buckling:** Magnetic ClipQuik chest clip lets you buckle/unbuckle with one hand—no more fumbling during busy mornings.
- • **Quick & Secure Setup:** One-click LATCH connectors ensure fast, rock-solid installation so you can hit the road with confidence.
- • **Grow-With-You Versatility:** Seamlessly transitions from rear-facing infant to forward-facing toddler to booster for big kids (4-100 lbs).
- • **Streamlined Harness System:** Out-of-the-way spring assist harness eliminates strap struggles, making adjustments quick and hassle-free.

## Overview

The Maxi-Cosi Pria Max All-in-One Convertible Car Seat supports children from 4 to 100 lbs across three modes: rear-facing, forward-facing, and booster. Featuring a magnetic one-handed ClipQuik buckle, an out-of-the-way harness system, and easy one-click LATCH installation, it combines safety with convenience. Crafted with PureCosi fabrics free from wool and fire retardants, it offers plush comfort and machine-washable padding, making it a top choice for modern families seeking a durable, versatile car seat.

## Description

The Maxi-Cosi Pria Max All-in-One Convertible Car Seat is designed to accompany your child from birth to 10 years (4–100 lbs.). This car seat offers flexibility with rear-facing (4–40 lbs., 19"–40"), forward-facing (22–65 lbs., 29"–49"), and belt-positioning booster (40–100 lbs., 43"–52") options. The Pria Max makes securing your child quick and struggle-free with the ClipQuik magnetic chest clip that can be opened with one hand. The Out-of-the-Way spring assist harness system prevents fumbling with straps and buckles. Crafted with PureCosi fabrics, the car seat fabric is free from wool and added fire retardants. The Pria Max features soft, plush fabric, padding, and cushions that can easily be removed for machine washing and drying. Installation is straightforward with one-click LATCH connectors, making the process hassle-free. From your newborn's first ride home to your big kid's school drop-off, the Maxi-Cosi Pria Max All-in-One Convertible Car Seat is a reliable, comfortable choice for modern families.

Review: No hassle just ready to use - Perfect right out of the box. Easy to adjust the straps and even easier to recline for babies comfort.
Review: Maxi-Cosi Pria Car Seat - Winner, Winner Chicken Dinner! - I spiraled looking for the best car seat; many are solely rear-facing! This one is convertible, both rear-facing and forward-facing. I found it in the top ten picks on a few non-sponsored websites. It is roomy, easy to adjust, sturdy, and the installation was a breeze. It has two cupholders. This car seat is well made, and the material seems strong and sturdy, but the inserts are so soft. It is NOT tiny; it is pretty wide. I have a BMW iX, which is quite large. My husband is tall and able to extend his seat far enough back, and even though she is in the middle, it was a problem with the last one. I have read many reviews about the smell; mine had no scent. I purchased this car seat to stay stationary in my car; I would not recommend buying it to attach to a stroller because of its size and weight. It's user-friendly, and the harness is easy to adjust. It feels very safe, which I think, at the end of the day, is the most important. The car seat is a great value; I wanted to write a review because I see that many reviews are from people who were “gifted” it in exchange for their reviews. I paid full price, and I think I got a great deal. I would consider other Maxi Cosi products in the future. If you are on the fence, go for it; no regrets.

## Features

- ALL-IN-ONE DESIGN: The convertible car seat is designed to support your child as they grow: infant rear-facing (4–40 lbs. and 19"–40"), toddler forward-facing (22–65 lbs. and 29"–49"), and big kid belt-positioning booster (40–100 lbs. and 43"–52").
- QUICK BUCKLING: ClipQuik is our magnetic chest clip on the all-in-1 convertible car seat and belt-positioning booster that you can open 1-handed to make buckling and unbuckling fast and struggle-free.
- OUT-OF-THE-WAY HARNESS: The convertible carseat includes an out-of-the-way harness system that helps eliminate fumbling with straps and buckles.
- COMFORTABLE PURECOSI FABRICS: Our PureCosi plush fabric, padding, and cushions on these carseats are made without wool or added fire retardant treatments.
- EASY INSTALLATION: The 1-click LATCH connectors on the all in one car seat simplify installation, offering a secure and fast setup for your all in one car seat.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B3JRSKW1 |
| Age Range Description | Kid |
| Best Sellers Rank | #10,063 in Baby ( See Top 100 in Baby ) #31 in Convertible Child Safety Car Seats |
| Brand | Maxi-Cosi |
| Color | Essential Graphite – PureCosi |
| Customer Reviews | 4.4 out of 5 stars 1,895 Reviews |
| Forward Facing Maximum Weight | 65 Pounds |
| Installation Type | Latch |
| Item Dimensions D x W x H | 25"D x 20"W x 20"H |
| Item Height | 20 inches |
| Item Weight | 22.35 Pounds |
| Manufacturer | Dorel Juvenile Group |
| Material | Foam |
| Material Type | Foam |
| Maximum Height Recommended | 49 Inches |
| Maximum Weight Recommendation | 100 Pounds |
| Minimum Weight Recommendation | 4 Pounds |
| Orientation | Rear Facing |
| Product Dimensions | 25"D x 20"W x 20"H |
| Rear Facing Minimum Weight | 4 Pounds |
| UPC | 884392949945 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Maxi-Cosi
- **Installation Type:** Latch
- **Material:** Foam
- **Color:** Essential Graphite – PureCosi
- **Orientation:** Rear Facing

## Images

![Maxi-Cosi Pria Max All-in-One Convertible Car Seat, Rear Facing Car Seat (4-40 lbs), Forward Facing Car Seat (22-65 lbs), High Back Booster Seat (40-100 lbs), Pure COSI, Essential Graphite - Image 1](https://m.media-amazon.com/images/I/81qs37gj7cL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ No hassle just ready to use
*by A***N on December 19, 2025*

Perfect right out of the box. Easy to adjust the straps and even easier to recline for babies comfort.

### ⭐⭐⭐⭐⭐ Maxi-Cosi Pria Car Seat - Winner, Winner Chicken Dinner!
*by R***H on September 26, 2024*

I spiraled looking for the best car seat; many are solely rear-facing! This one is convertible, both rear-facing and forward-facing. I found it in the top ten picks on a few non-sponsored websites. It is roomy, easy to adjust, sturdy, and the installation was a breeze. It has two cupholders. This car seat is well made, and the material seems strong and sturdy, but the inserts are so soft. It is NOT tiny; it is pretty wide. I have a BMW iX, which is quite large. My husband is tall and able to extend his seat far enough back, and even though she is in the middle, it was a problem with the last one. I have read many reviews about the smell; mine had no scent. I purchased this car seat to stay stationary in my car; I would not recommend buying it to attach to a stroller because of its size and weight. It's user-friendly, and the harness is easy to adjust. It feels very safe, which I think, at the end of the day, is the most important. The car seat is a great value; I wanted to write a review because I see that many reviews are from people who were “gifted” it in exchange for their reviews. I paid full price, and I think I got a great deal. I would consider other Maxi Cosi products in the future. If you are on the fence, go for it; no regrets.

### ⭐⭐⭐⭐⭐ Great quality
*by A***S on December 1, 2025*

Absolutely love this car seat and so does my daughter. It’s so comfortable and plush! Love that’ll it grow with her

## Frequently Bought Together

- Maxi-Cosi Pria Max All-in-One Convertible Car Seat, Rear Facing Car Seat (4-40 lbs), Forward Facing Car Seat (22-65 lbs), High Back Booster Seat (40-100 lbs), Pure COSI, Essential Graphite
- Maxi-Cosi Pria All-in-One Convertible Car Seat, rear-facing, from 4-40 pounds: forward-facing to 65 pounds: and up to 100 pounds in booster mode, Blackened Pearl
- Maxi-Cosi Emme 360 Car Seat: Rotating Car Seat 360, All-in-One Convertible, Car Seat 360 Rotation, Swivel Car Seat in Midnight Black

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-02*