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The Graco Junior Maxi i-Size R129 Highback Booster is a lightweight, safety-certified car seat designed for children aged approximately 3.5 to 12 years (100-150 cm). Featuring a 10-position adjustable headrest, retractable cupholders, and a machine-washable cushioned seat pad, it combines comfort, convenience, and compliance with the latest R129 safety regulations. Its durable yet portable design makes it a top choice for modern families seeking reliable protection and effortless usability.








| ASIN | B0BMGNDJHV |
| Age Range Description | Kid |
| Best Sellers Rank | 146 in Baby Products ( See Top 100 in Baby Products ) 1 in Car Seats (Baby Products) |
| Brand Name | Graco |
| Colour | Midnight |
| Country Of Origin | China |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,963) |
| Forward Facing Car Seat Minimum Height | 60.5 Centimetres |
| Forward Facing Maximum Weight | 36 Kilograms |
| Harness Type | 3-Point |
| Included Components | Car seat, instruction manual |
| Infant Toddler Car Seat Type | Booster Car Seat |
| Installation Type | Seat Belt |
| Item Dimensions D x W x H | 53.7D x 40.8W x 81.7H centimetres |
| Item Type Name | car seat; big kid car seat; toddler car seat; forward facing car seat; R129; i-size |
| Item Weight | 3.49 Kilograms |
| Manufacturer | Graco |
| Manufacturer Part Number | 8CT899MDNEU |
| Manufacturer Warranty Description | 2 year manufacturer |
| Material Type | Alloy Steel, Polyester, Polypropylene |
| Maximum Height Recommendation | 150 Centimetres |
| Maximum Weight Recommendation | 36 Kilograms |
| Minimum Height Recommendation | 100 Centimeters |
| Minimum Weight Recommendation | 15 Kilograms |
| Model Number | 8CT899MDNEU |
| Number of Height Positions | 10 |
| Orientation | Forward Facing |
| Unit Count | 1 Case |
C**A
Very good seat and great value
Great car seat. Lightweight but sturdy and my granddaughter declares it to be very comfortable. Handy pull out cup holder on each side. It was very easy to adjust the headrest to the right height.
R**N
Fantastic seat for 15kg and over
Been using this for a while now and it's lovely for the price. It'not too bulky like some are, the back comes off when it's time to move to just the booster seat, and it has 2 cup holders that can be pushed in when not in use. The booster sits nicely in the back seat, and just about fits in the back with 2 other booster seats, as long as they're not too bulky. Seat belt fits into a clip on the back to help keep the cross body part secure without sitting on the child's neck. Note: This is not a seat with a 3 point harness. It is the next step up from those seats. We use weight to move up to the next stage, it is my understanding that the weight to move up is from a 3 point harness fully secured base, to one like this is 15kg.
C**R
Decent car seat
Good value car seat. Lightweight and seems fairly sturdy. Only negative is it looks like the material may rub up easily.
L**D
Sturdy and safe.
Very sturdy and safe seating for my grandson. Easily put together, will be put to good use very often.
T**A
Price, comfort and additions
Overall a really good junior car seat and has 2 really handy cup holders, nice and wide so great for kids on the bigger side without feeling squished, headrest is fantastic for those that still fall asleep in the car as keeps there head nicely positioned without flopping around, also turns into a booster seat and cant beat the price. Would definitely recommend and buy again in the future if needed.
P**E
Really great value
Brilliant 4-12 year child’s car seat with a five point harness.
A**R
Safe, comfortable, and easy to use!
I’m very pleased with the Graco Junior Maxi i-Size Booster Car Seat! It’s a great option for keeping my child safe and comfortable during car rides. The seat is easy to install, and the adjustable backrest ensures a snug fit as my child grows. The padding is soft, and my child finds it comfortable for longer trips. The side-impact protection gives me peace of mind, knowing my little one is well protected. I would definitely recommend it for anyone looking for a reliable and affordable booster car seat.
K**Y
Good car seat
Bought to replace old one after an accident and my daughter says it's very comfortable. The seatbelt guide holds it in place. Cup holders are very handy.
R**K
Bra smidig stol
M**A
My kids are already 4 and 5 so the eggshells were not comfortable for them. This seats are perfect, comfortable, easy to keep clean. Will stay with us many years for sure.
R**6
Preiswert und trotzdem sehr gut. Das Kopfteil kann in der Höhe verstellt werden und hat auf jeder Seite einen Becher/Flaschenhalter. Das Kind wird durch den normalen Gurt, der oben im Schulterbereich durch eine Gurt-Führung und über den Hüftbereich geführt wird, fixiert. Der Sitz ist leicht doch durch den Gurt wird er sehr gut befestigt. Bin sehr zufrieden damit
J**A
Easy to assemble, well made and adjustable, comfortable child's car seat , great value for money
J**R
Jag köpte denna barnstolen eftersom barnbarnet blivit för stor för att åka i bakåtvänd bilstol. Barnets far monterade denna stolen på plats och enligt honom är stolen perfekt! Barnbarnet är nöjd, barnets far är nöjd och min fru är jättenöjd så då kan betyget bara bli full pott!
Trustpilot
5 days ago
4 days ago