From baby to big kid, the KNOX Convertible Car Seat is packed with intuitive safety features and easily adapts as children grow and their positioning needs change.
A natural next step when your child transitions from the MESA infant car seat, the KNOX provides a rear-facing and forwarding-facing solution that accommodates a growing baby and toddler. The KNOX is packed with unique safety innovations and new features that provide a more robust fit in your vehicle.
Suitable for approximately 1–6 years old
From 14–45 lbs, and using the included fit inlay from 14–25 lbs
From 25–65 lbs
Up to 49″
23.8” L x 18.8” W x 27.4–32.5” H (height reflects headrest in lowest and highest positions)
New features that provide a more robust fit in vehicles include.
Multi-Directional Tether – An industry first, the Multi-Directional Tether reduces seat rotation and stress on the child’s head and neck in the event of impact. When used in rear-facing mode, the Multi-Directional Tether reduces crash forces by 45%* (*2020 results from crash testing conducted at independent labs in U.S. and Canada).
SMARTSecure™ System – Safety you can see. This unique technology utilizes a tightness indicator and robust tensioning clips to provide a visual confirmation of correct install each and every time.
Koroyd® Technology – Developed from aerospace safety research, innovated for action sports, and now built into the base of the KNOX car seat – a juvenile industry first - Koroyd provides more advanced impact protection. The welded tube structure crumples instantly and consistently on impact, absorbing maximum force in a controlled manner to minimize energy transfer to the child.
What is the difference between this version of the Uppababy Knox and the 2019 version?
In 2021, Uppababy brought the new KNOX to the marketplace with features that enhance ease of use and fit in vehicle:
What options for installation does the Uppababy Knox have?
You can use LATCH in rear-facing mode until a child is 35 lbs. After the child reaches 35 lbs, it’s time to switch to belt installation.
For forward-facing installations, we recommend using belt only as remembering to switch from LATCH to belt is simply one more thing parents could forget.
Is LATCH safer than seatbelt as an installation method?
Both systems are tested to the same rigorous crash testing and meet government safety standards. Installation method depends on what is best for you and your vehicle.
Which position is best for my child to use the Uppababy 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 at most a fingertip of space between the child’s shoulders and headrest.
*Knox is not suitable for newborns, as the starting weight will be 14lbs
What color of the Uppababy Knox is free of fire-retardant chemicals?
The high-grade Merino wool blend bonded to foam makes the JORDAN KNOX a naturally fire-resistant, while also passing federal fire safety testing (FMVSS302) without the application of chemical flame retardants and without brominated and chlorinated chemicals.
Can you wash the fabric of the Uppababy Knox?
Yes, you can machine wash the KNOX seat fabric and fit inlay cover on a gentle cycle. The seat base fabric can be removed for easy cleaning. Lay all fabrics flat to dry. We recommend spot cleaning the upper body fabric whenever possible.
Can I fly with the Uppababy Knox?
KNOX is FAA-approved for use in an airplane.