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KNOX car seat - artwork by Finn B, Phoebe C, and Eve L

Stay safe. Keep going.

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.

Detail image showing the tightness indicator and clips

Safety you can see

Our unique technology, utilizing a tightness indicator and robust tensioning clips, provides visual confirmation of a correct install, not to mention peace of mind.

Protected by Koroyd

The ultimate damage control system

Koroyd® was developed from aerospace safety research, innovated for action sports, now built-in to the base of the KNOX providing more advanced impact protection.


Koroyd’s welded tubes crumple instantly and consistently on impact, absorbing maximum force in a controlled manner, minimizing energy transferred to the child.

Illustration showing the general Koroyd contstruction
The KNOX tether helps keep the seat secure

Tether them better

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 potential injury by 45%.

2020 results from crash testing conducted at independent labs in U.S. and Canada.

Adjust with ease

Our no-rethread harness, eight-position headrest, and four-position recline all adjust quickly and easily as your child grows.

Adjust your seat to fit your child
Included removable cup holder

Sip and go

Sippy cup or water bottle, the KNOX includes a removable cup holder that can attach to either side of the seat. When spills happen, the seat base fabric can be removed for easy cleaning.

The KNOX, built with an energy response technology

Energy Response Technology

A family of features designed to protect and provide unparalleled side impact protection.

The KNOX headrest can be adjusted to your child

Protection that’s heads above the rest

Absorption and recovery properties of specialized foams in the Active Support Headrest provide advanced side impact protection that grows with your child.

A small feature that makes a big difference

Positioned on the side of shell and always engaged, the Side Impact Pods absorb and deflect crash forces during a side impact crash.

Closeup photo of the side impact pod
Closeup photo of the outer shell

Impact dispersion zone

Strategic placement of EPP foam between the inner and outer shell ensures forces are absorbed into the seat rather than the child.

The JORDAN KNOX with chemical-free fire-retardent material

A chemical-free choice

Through its innovative use of Merino wool, the JORDAN KNOX passes federal safety standards without the use of fire retardant chemicals. The wicking properties of Merino wool keeps kids cool on hot days and warm on cool days.

Our warranty

UPPAbaby offers a LIMITED LIFETIME WARRANTY on all car seats representing ourcommitment to child passenger safety.

Sign up for your KNOX warranty

Explore the other car seats in our family

Our collection includes the ALTA, KNOX, and MESA car seats


Suitable for approximately 1–6 years old
Rear-facing: from 14–45 lbs, and using the included fit inlay from 14–25 lbs
Forward-facing: from 25–65 lbs
Height: up to 49″

Dimensions: 23.8” L x 18.8” W x 27.4–32.5” H (height reflects headrest in lowest and highest positions)

KNOX image
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