Hi there! We're here to help you decide between the Graco Tranzitions 3-in-1 Harness Booster and the UPPAbaby Knox.
Our goal is to provide you with the information you need to feel confident that you're choosing the optimal car seat for your family's needs and budget. Let us know if you have any other questions!
At A Glance
Graco Tranzitions 3-in-1 Harness Booster | UPPAbaby Knox | |
Type |
Convertible Forward-Facing High Back Booster Backless Booster |
Convertible Rear-Facing Forward-Facing |
Current price |
Currently unavailable
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Currently unavailable
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Rating | 4.77 | 4.40 |
Our Thoughts
When it comes to selecting the right car seat for your child, there are two major contenders you might be considering: the Graco Tranzitions 3-in-1 Harness Booster and the UPPAbaby Knox. Both come from reputable manufacturers and are engineered with safety in mind.
The Graco Tranzitions 3-in-1 is designed to adapt and grow with your child. It transitions from a harness booster for 22-65 pounds, to a highback booster for 40-100 pounds, and finally, to a backless booster. If you're seeking versatility and durability on a budget, Tranzitions is an excellent choice. However, some parents have found the installation process a bit frustrating. While it may not have all the luxury features, its machine-washable fabric, portability, and 3-in-1 design offer great benefits for its price range. Moreover, the seat meets Graco's ProtectPlus Engineered standards, reflecting its strength in safety.
On the other hand, UPPAbaby's Knox offers a premium experience with high-end styling. This model is a convertible car seat that can be used both rear-facing for children up to 45 pounds and forward-facing up to 65 pounds. Its key features include integrated Koroyd technology to absorb crash impact forces and Side Impact Pods to absorb and deflect crash forces during a side impact. However, despite these high-performance safety enhancements, many parents have reported difficulty with its installation and the seat's larger size, which may limit its suitability for smaller vehicles.
The notable difference in the weight capacity between these two styles of car seats should also be considered, as the Graco Tranzitions 3-in-1 has a higher weight limit in both the forward-facing mode (65 lbs as against UPPAbaby Knox's 45 lbs) and as a high back booster seat (100 lbs). Plus, while the UPPAbaby Knox is FAA approved for both rear and forward-facing modes, the Graco Tranzitions is only approved for forward-facing.
If you're seeking a car seat that offers long-term service from toddler to the preteen years, and you don't mind a bit of a challenge in terms of installation, the Graco Tranzitions 3-in-1 is a solid choice. Its portability and compact design also make it a sensible option for families in need of frequent car seat transfers between vehicles.
In contrast, if budget isn't a constraint, and you value the premium aesthetics and additional safety features that go beyond standard norms, UPPAbaby's Knox is up for consideration. Do bear in mind, though, that it might better suit families with larger vehicles given its more substantial size.
Key Details
Tranzitions 3-in-1 Harness Booster | Knox | |
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Brand | Graco | UPPAbaby |
Type |
Convertible Forward-Facing High Back Booster Backless Booster |
Convertible Rear-Facing Forward-Facing |
Weighted Rating | 4.77 | 4.40 |
1 yr Price Range | $97.99 - $139.99 | $299.99 - $349.99 |
Current price |
Currently unavailable
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Currently unavailable
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Value |
![]() The price point combined with its 3-in-1 versatility offers significant savings over time. |
![]() The Knox is priced at the higher end of the market without corresponding enhancements in convenience or functionality. |
Safety |
![]() It meets Graco's ProtectPlus Engineered safety standards, which is a rigorous test for safety. |
![]() Features like integrated Koroyd technology and Side Impact Pods offer advanced safety beyond standard requirements. |
Features |
![]() The Simply Safe Adjust Harness System and portable design are standout features. |
![]() While the chest clip's one-button release and the machine-washable fabric are nice, they don't set the Knox apart in a crowded market. |
Installation |
![]() Some parents find the installation process difficult and frustrating. |
![]() Installation challenges are frequently noted, which could be a significant deterrent for parents who need to move the seat between vehicles. |
Cleaning |
![]() Easy to remove and washable parts make cleaning a breeze. |
![]() The machine-washable fabric is a convenient feature, allowing for easier maintenance and cleanliness. |
Size |
![]() The lightweight and compact design make it convenient for transfers between vehicles. |
![]() Its premium build comes with added bulk, making it less suitable for smaller vehicles or those needing to fit multiple seats. |
Review | Click here | Click here |
Comparison of Specifications
While features and reviews provide a sense of real-world use, the specs offer quantifiable details on sizing, limitations, and more. Comparing key measurements and ranges side-by-side is crucial for ensuring you choose a seat properly fitted for your child and vehicle.
We've compiled the weight limits, height limits, dimensions, and other vital statistics for the Graco Tranzitions 3-in-1 Harness Booster and the UPPAbaby Knox. This data will confirm whether each seat can accommodate your child's current size and projected growth. Specs like seat depth and width are also important for assessing fit with your car's backseat.
Review the following key measurements for both seats. Pay special attention to the height and weight limits to ensure your child falls within the safe ranges.
Height and Weight Limits
Rear-facing
Graco Tranzitions 3-in-1 Harness Booster | UPPAbaby Knox | |
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Height Range | 0 - 49 inches | |
Weight Range | 14 - 45 pounds |
Forward-facing
Graco Tranzitions 3-in-1 Harness Booster | UPPAbaby Knox | |
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Height Range | 27 - 57 inches | 0 - 49 inches |
Weight Range | 22 - 65 pounds | 25 - 65 pounds |
Booster
Graco Tranzitions 3-in-1 Harness Booster | UPPAbaby Knox | |
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Height Range | 0 - 49 inches | |
Weight Range | 30 - 100 pounds |
Dimensions and Weight
Graco Tranzitions 3-in-1 Harness Booster | UPPAbaby Knox | |
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Width | 19.0 inches | 18.8 inches |
Height | 26.5 inches | 32.5 inches |
Depth | 17.4 inches | 23.8 inches |
Weight | 20.0 pounds | 32.5 pounds |
Core Specifications
Graco Tranzitions 3-in-1 Harness Booster | UPPAbaby Knox | |
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Model Year | 2018 | 2022 |
Made In | China | China |
Frame Material | Aluminum | Koroyd Technology |
Safety and Compliance
Graco Tranzitions 3-in-1 Harness Booster | UPPAbaby Knox | |||||||||||||||||||||||||||||||||||||||||
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Federal Safety Standards | Meets all standards | Meets all standards | ||||||||||||||||||||||||||||||||||||||||
Configurations FAA-Approved for Airplanes |
Forward-Facing High Back Booster Backless Booster |
Forward-Facing Rear-Facing |
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NHTSA Ease-of-Use Ratings |
Forward-Facing Mode
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Rear-Facing Mode
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Previous Recalls | This car seat has never been recalled. | This car seat has never been recalled. |
Features
Graco Tranzitions 3-in-1 Harness Booster | UPPAbaby Knox | |
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Attachment Methods |
LATCH Seatbelt |
LATCH Seatbelt |
Harness Type | 5-Point | 5-Point |
Cup Holders | Has cup holders. | Has cup holders. |
Warranty and Durability
Graco Tranzitions 3-in-1 Harness Booster | UPPAbaby Knox | |
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Manufacturers Warranty Length | 1 year | 2 years |
Lifespan | 7 Years | 10 Years |
Additional Links
See all Graco car seats | See all UPPAbaby car seats |
Full review of the Graco Tranzitions 3-in-1 Harness Booster Full review of the UPPAbaby Knox |