UPPAbaby KNOX Convertible Car Seat


 The KNOX is UPPAbaby's first convertible car seat that grows with your child through toddlerhood and beyond, from 14 to 65 pounds or 49" in height.

The UPPAbaby KNOX includes unique safety features not seen on other convertible car seats, like a multi-directional tether and Koroyd crash-protection technology developed from aerospace safety research.

The tether strap, used for both rear-facing and forward-facing installations, acts like a load leg, anchoring the seat to prevent it from rotating in a collision and causing injury to the child's head and neck.

The base of the UPPAbaby KNOX includes Koroyd technology, seen in sporting goods and high-performance helmets, which crumples instantly on impact to absorb energy and slow forces in a crash.

Throughout the core and headrest of the seat, the UPPAbaby KNOX is fully lined with EPP, the toughest type of foam. Side impact pods on the sides of the seat serve as the first line of defense in a crash, helping to disperse forces away from your child.

UPPAbaby's SMARTSecure system provides visual confirmation of a secure installation, while numerous recline positions and a no-rethread harness make the car seat easy to use.

The Jordan Charcoal Melange color of the KNOX is made with merino wool, a fiber that is breathable, hypoallergenic and naturally fire-resistant.



  • Converts from rear-facing to forward-facing, growing with your child from 14 to 65 pounds
  • Koroyd, a welded tube structure in the base of the seat, provides crash impact protection by crumpling on impact to absorb crash forces and reduce acceleration
  • Multi-directional tether, used for both rear-facing and forward-facing installations, inhibits rotation of the seat in the event of a crash
  • EPP foam integrated into side impact pods and along seat shell absorbs forces in a collision
  • Active Response Headrest uses the absorption and recovery properties of foam to protect your child's head and neck
  • SMARTSecure system includes visual indicators that turn from red to green to signal a safe installation
  • 4 recline positions offer recline range of 32 degrees
  • Storage pockets keep harness buckles out of the way for convenient entry and exit
  • Seat fabric is easily removable and machine-washable
  • Bead levels and 4-position adjustable foot ensure that the car seat is level
  • Color-coded seatbelt paths make installation easy to understand
  • 8-position, no-rethread harness adjusts with headrest


  • Infant insert usage: 14 to 25 pounds
  • Rear-facing: 14 to 45 pounds
  • Forward-facing: 25 to 65 pounds; up to 49" in height
  • Dimensions: 20"L x 18.25"W x 27.4-32.5"H
  • Product weight: 30 pounds
  • Warranty: Limited lifetime warranty through UPPAbaby

Shipping Information

Free shipping on orders over $49 is available to Strolleria customers in the lower 48 states. We do not offer shipping outside the continental United States.

Most Strolleria orders are shipped via FedEx Ground from our warehouse in Scottsdale, Arizona within 1-3 business days of the order time. Custom products such as Bugaboo and Mima strollers may require additional fulfillment time due to their complexity. 

See this page for more details about shipping, including estimated arrival times to your location.

Return Policy

Strolleria accepts returns of new, unused items that are returned to us within 60 days of receipt. 

Because safety is a top priority for us and all new parents, Strolleria only accepts returns of items that have never been used. Items must be returned in the same condition in which you received them, including the original packaging.

Furniture pieces are final sale and cannot be returned or exchanged. 

All products sold by Strolleria are covered under a manufacturer's warranty. If the product is defective or becomes damaged during the warranty period, the manufacturer will send a repair or replacement part at no cost.

Visit this page for our complete return policy.


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