Junior Maxi™ i-Size R129

Lightweight Highback Booster Car Seat


From 100-150cm (approx. 3.5 to 12 years)

-i-Size and R129 certified
-Enhanced side impact protection safeguards your child’s head and neck


Ease of Use
-Lightweight at only 3.4kg, making it easy to move between vehicles for hassle-free journeys
-Open-loop belt guides help ensure proper seat belt positioning
-Machine-washable covers for easy clean up


Child Comfort
-10-position headrest provides proper support for your child’s head and neck
-2 retractable cupholders keep drinks, gadgets and goodies right within reach
-Premium padded seat for enhanced comfort
-Forward facing highback booster from 100 to 150cm (approx. 3.5 to 12 years)

More Information
Product Length 39cm
Product Width 45.6cm
Product Height 60.5-81.5cm
Product Weight 3.4kg
Package Includes

(1) Junior Maxi i-Size R129 highback booster car seat

(1) instruction manual

What is the difference between Junior Maxi R44 and Junior Maxi i-Size R129?
There are currently 2 different car seat standards in the EU. R44 (legally known as ECE R44/04) car seats are divided into groups based on weight, with some covering multiple groups. Eventually, R44 car seats will no longer be available for purchase, but these seats are still safe to use. Junior Maxi R44 is based on these standards.


Junior Maxi i-Size R129 meets the new R129 (legally known as ECE R129) standards. The main differences in these standards are that car seats are based on your child’s height and undergo more side impact testing. Junior Maxi i-Size R129 is based on these standards. You can learn more about car seat standards and help figure out which car seat is right for you in our car seat buying guide.


Does the back of Junior Maxi i-Size R129 detach to use as a backless booster?
Junior Maxi i-Size R129 cannot be detached for use as a backless booster. We have backless boosters such as EverSure Lite R129 and Booster Basic R129 for you to choose from.


Can I machine wash Junior Maxi i-Size R129’s seat covers?
Yes, you can wash the covers in your washing machine with cold water only on the delicate cycle. Drip dry and do not use bleach.


What is the maximum height and age for Junior Maxi i-Size R129?
This car seat can be used until your little one is your big one, up to 150cm or approximately 12 years of age.


How do you safely keep Junior Maxi i-Size R129 in your vehicle when not being used?
To ensure the safety of you and anyone else in the vehicle, we recommend buckling in the highback booster even when there is no kid in it. This will keep it from being thrown from the seat in the event of a collision.

This car seat is suitable from 100-150cm (approx. 3.5-12 years).

To wash the covers: machine wash in cold water only on delicate cycle 30 degrees and drip dry. Do not use bleach.


Metal and plastic parts: clean with mild soap and cool water. No bleach or detergents.

© 2022 Graco Children's Products. All Rights Reserved.