The UPPAbaby Knox Convertible Car Seat is designed to grow with your child, providing unparalleled safety and adaptability from baby to big kid. Suitable for children from 1 to 6 years old, this seat is packed with intuitive safety features and advanced technologies to ensure peace of mind for parents. Whether rear-facing or forward-facing, the Knox offers a flexible fit and protection as your child grows. Featuring Koroyd® technology for advanced impact absorption and a Multi-Directional Tether that reduces seat rotation, the Knox Convertible Car Seat is a powerful tool in child safety.
The seat includes Side Impact Pods and an Active Support Headrest to provide advanced side impact protection. The fabric options offer a safeTECH fire-retardant-free option and a pureTECH Merino wool fabric that is naturally fire-resistant. With the SmartSecure® System, installation is made easy with a red-to-green tightness indicator that visually confirms a correct installation.
UPPAbaby® was founded by parents who know firsthand the demands of modern parenting, and their mission is to redefine baby gear with a perfect blend of style, functionality, and quality. Since 2006, they’ve been committed to creating innovative, high-performance products that not only meet but exceed the needs of families, inspired by their own journey and the invaluable feedback from their ever-growing community of parents.
UPPAbaby Knox Convertible Car Seat Features:
Comfort and Safety: Choose between Safetech™ and Puretech™ fabrics for ultimate comfort and safety. Safetech™ is crafted from original fire retardant-free fabric, free from harmful chemicals, while Puretech™ features hypoallergenic merino wool that is naturally temperature-regulated and fire retardant-free. Both options ensure a safe and cozy environment for your baby.
SmartSecure® System: The red-to-green tightness indicator ensures the car seat is installed correctly for optimal safety.
Koroyd® Technology: Integrated into the base, it creates an advanced crumple zone to absorb impact forces.
Energy Response Technology: Provides unparalleled side impact protection by absorbing and distributing crash forces, ensuring maximum safety for your child.
Side Impact Pods: Built into the shell to absorb and deflect crash forces during a side-impact collision.
Multi-Directional Tether: Reduces seat rotation and stress on the child's head and neck in both rear and forward-facing installations.
No-rethread Harness: Adjusts easily with an eight-position headrest and four-position recline as your child grows.
Active Support Headrest: Provides growing side-impact protection as the headrest adjusts with your child.
EPP Foam Layer: Placed between the inner and outer shell, it absorbs impact forces for better protection.
Two-piece Fit Inlay: Offers flexibility and ensures a proper fit for children between 14–25 lbs.
Removable and Washable Seat Fabric: Easy to clean after spills or daily use.
Removable Cup Holder: Easily attaches to either side of the seat and is dishwasher safe, providing convenient access to your child's sippy cup or water bottle.
Color-coded Belt Paths: Makes installation simpler and more intuitive.
Multi-position Adjustable Foot: Ensures proper leveling for different vehicles.
Storage Pockets: Conveniently store harness buckles when not in use.
Lifetime Warranty: UPPAbaby offers a product lifetime warranty for added peace of mind.
| Dimensions: | 23.8” L x 18.8” W x 27.4–32.5” H (Adjustable Headrest) |
| Safety Technology: |
Koroyd® Technology Energy Response Technology Multi-Directional Tether, Side Impact Pods |
| Recommended Use | |
| Suitable Age: |
1 - 6 years |
| Suitable Height: | Up to 49 inches |
| Rear-facing Weight: |
14 - 45 lbs, with the included fit inlay for 14 - 25 lbs |
| Forward-facing Weight: |
25 - 65 lbs |
| Brand: | UPPAbaby |
| Jake: Black Melange Manufacturer SKU: | 1120-KNX-US-JKE |
| UPC: | 810030093800 |
| Jordan: Charcoal Melange Wool / Citron Accent Manufacturer SKU: |
1120-KNX-US-JOR |
| UPC: |
810030093824 |
| Gregory: Blue Melange / Merino Wool Manufacturer SKU: |
1120-KNX-US-GRG |
| UPC: |
810030099635 |
| Bryce: White / Grey Marl Manufacturer SKU: |
1120-KNX-US-BRY |
| UPC: |
810030093848 |
| Noa: Navy Melange Manufacturer SKU: |
1120-KNX-US-NOA |
| UPC: |
810030096177 |
UPPAbaby Convertible Car Seat
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Removable, Dishwasher-Safe Cup Holder
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Warranty Card
Can you use a seat pad to protect vehicle seats while using the …(Mesa v2, Mesa Max, Aria, Knox, Alta v2)?
No, UPPAbaby does not allow vehicle seat protectors with their car seats because they haven't been tested or approved for use. The car seat base has a finished bottom to prevent vehicle seat damage.
Do you have to use the tether in rear-facing and/or forward-facing mode?
While not required by law, the Multi-Directional Tether is strongly recommended for use in both rear and forward-facing mode for optimal protection. It significantly reduces injury scores by as much as 45%.
(*2020 results from crash testing conducted at independent labs in U.S. and Canada)
How do you properly fit a child in the Knox?
In both rear-facing and forward-facing mode, the headrest should be positioned at the child’s shoulders to ensure proper fit of the harness. The headrest can lightly touch the shoulders and allow 1 in of space between the child’s shoulders and headrest.
The fit inlay must be used with children from 14 - 25 lbs in order to achieve a proper harness fit.
How does Koroyd® work?
Koroyd’s welded tubes crumple instantly and consistently on impact, absorbing maximum force in a controlled manner, minimizing energy transferred to the child. This unique behavior helps to protect your child from impact forces which may reduce the risk of suffering a life-changing injury.
What does the fit inlay do?
The Knox fit inlay provides an excellent fit for smaller children and must be used from 14 to approximately 25 pounds. It ensures proper positioning of the child relative to the harness and crotch buckle.
Where do you attach the tether to?
Check your vehicle owner’s manual for vehicle top tether anchor locations. They are often found in sedans behind the backseat headrest or in other vehicles behind the seat back.
What age and weight is the UPPAbaby Knox Convertible Car Seat suitable for?
The seat is suitable for children from 1 to 6 years old. It can be used rear-facing for children weighing 14–45 lbs (with the fit inlay for 14–25 lbs) and forward-facing for children weighing 25–65 lbs.
How does the SmartSecure® System help with installation?
The SmartSecure® System includes a red-to-green tightness indicator that provides visual confirmation when the car seat is installed correctly, ensuring a secure fit.
What makes the Knox Convertible Car Seat safer during side-impact collisions?
The Side Impact Pods and the Active Support Headrest work together to absorb and deflect crash forces during side-impact collisions, providing extra protection for your child.
Is the seat fabric removable and washable?
Yes, the seat fabric is removable and machine washable, making it easy to clean after spills or everyday use.
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