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🚗 Elevate every ride with safety, style, and smart convenience!
The Graco Junior Maxi i-Size R129 Highback Booster is a premium forward-facing car seat designed for kids aged approximately 3.5 to 12 years (100-150cm). Featuring a lightweight yet sturdy alloy steel frame, it offers 10-position adjustable headrest for growing children, dual retractable cupholders, and a soft, machine-washable seatpad. Rigorously tested to exceed R129 safety standards, this booster ensures optimal seat belt positioning with open-loop guides, combining safety, comfort, and convenience in a sleek Midnight fashion design.








| ASIN | B0BMGNDJHV |
| Age Range Description | Kid |
| Best Sellers Rank | 161 in Baby Products ( See Top 100 in Baby Products ) 1 in Car Seats (Baby Products) |
| Brand | Graco |
| Brand Name | Graco |
| Colour | Midnight |
| Country Of Origin | China |
| Customer Reviews | 4.7 out of 5 stars 3,301 Reviews |
| 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 |
| 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 | Alloy Steel, Polyester, Polypropylene |
| 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 |
| Product dimensions | 53.7D x 40.8W x 81.7H centimetres |
| 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.
M**M
Graco Junior Maxi i-Size R129 Highback
Got this item as I had used it before with my other grandchildren. Great child seat as it grows with the child, who likes the cup holders that can be used to hold not only drinks but hide little treats as well. Strong, sturdy quality, easy to use & set up.
S**L
Good alround car seat
Excellent car seat for my grand daughter Great value for the money, she loves the cup holder and says the seat is very comfortable
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.
A**�
Perfect car seat
Excellent quality. My 6 year old granddaughter loves it and doesn’t take up much space in the car. Extremely simple to fit. Has 2 cup holders and I purchased a separate cushion for the seat belt incase she falls asleep. Very sturdy so yeah would definitely recommend x
A**R
Comfortable
Great seat, easy to assemble
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.
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.
S**I
Great for space saving for multiple children next to each other
This car seat has exceeded expectations. It’s comfortable enough for my 4 year old to sleep in during long car drives, it fits well in our cars as it’s narrow enough for my son to sit in the middle seat and his baby sister on the other side. So very optimal for space saving.
J**R
Bra för pengarna
Köpte till styvsonens barn. En alldeles utmärkt produkt som dessutom kan användas när barnets längd förändras. Barnet i fråga tycker att stolen är bekväm, så då ger det såklart extra stjärna
F**R
Muy buen producto
Buen producto y de fácil montaje.
M**O
Leggero, comodo e molto pratico per l’uso quotidiano
Seggiolino davvero pratico e ben fatto, soprattutto per chi cerca una soluzione semplice ma comoda per il bambino. Una delle cose che ho apprezzato di più è la leggerezza: si sposta facilmente da un’auto all’altra senza fatica. La seduta è spaziosa e il bambino viaggia comodamente anche durante tragitti più lunghi. I materiali sembrano di buona qualità e l’imbottitura offre un buon comfort senza risultare troppo rigida. Anche l’installazione è risultata semplice e intuitiva, senza dover perdere troppo tempo con regolazioni complicate. Il design è essenziale ma funzionale e nel complesso dà una buona sensazione di sicurezza e stabilità. Ottimo rapporto qualità-prezzo, consigliato per praticità e comfort.
H**T
Parfait et conforme
Réhausseur de bonne qualité, confortable et conforme aux dernières normes de sécurité. L'installation est rapide et l'assise est top pour les trajets. Je recommande sans hésiter.
Trustpilot
1 month ago
3 weeks ago