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WELCOME to Atlantic Canada's Baby Store! Free Local Delivery from $49. Free shipping from $99. (Some exclusions apply.)
WELCOME to Atlantic Canada's Baby Store! Free Local Delivery from $49. Free shipping from $99. (Some exclusions apply.)

UPPAbaby KNOX Convertible Car Seat

Complimentary Install

Final Sale

Original price $449.99 - Original price $499.99
Original price
$449.99 - $499.99
Current price $449.99
Color: Jake

Pickup, delivery and shipping options will be displayed at checkout.

Welcome to the first convertible car seat to feature UPPAbaby's SMARTsecure system including an indicator window that turns from red to green when the seat is correctly installed!


From baby to big kid, the KNOX Convertible Car Seat is packed with intuitive safety features and easily adapts as children grow and positioning needs to change.


Suitable for approximately 1–6 years old

14 - 65 lbs (6.4 - 29.5 kg) 

Rear-facingfrom 14–40 lbs (6.4 - 18.1 kg)

Infant Insert fit inlay for 14 - 25 lbs (6.4 - 11.3 kg)

Forward-facing: from 25–65 lbs (11.3 - 29.5 kg)  

Height: up to 49" (124.5 cm)

With a focus on safety, the Multi-Directional Tether reduces injury potential by 45% when used in rear-facing mode. Energy Response Technology delivers unparalleled side impact protection from top to bottom with an eight position Active Support Headrest, Side Impact Pods and an Impact Dispersion Zone of EPP foam throughout the seat. The KNOX is the first child restraint to feature innovative Koroyd® technology integrated in to the base designed to absorb the maximum amount of energy from an impact

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

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


  • SmartSecure® system with red-to-green tightness indicator
  • Koroyd® technology integrated into the base creates an effective crumple zone protecting the child from impact forces. 
  • Multi-Directional Tether for rear and forward-facing travel
  • No-rethread harness adjusts with eight-position headrest
  • Two-piece fit inlay allows for proper fit from 14lbs. 
  • Removable cup holder included
  • Active Support Headrest that grows with your child
  • Side Impact Pods for additional impact absorption
  • EPP foam between the inner and outer shell ensures forces are absorbed into the seat
  • Bead level indicators on both sides of the seat
  • Colour coded belt paths with robust tensioning clips
  • Storage pockets for harness buckles
  • Removable and washable seat fabric
  • One naturally fire resistant option through innovative use of Merino wool. 

    Want to know more?

    Ultimate in Damage Control 

    The safety system UPPAbaby has chosen is called Koroyd®. It is developed from aerospace safety research, innovated for action sports, and built into the base of the KNOX car seat, providing more advanced impact protection.

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

    Multi-Directional Tether 

    A 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.)

    Quick and Easy Adjustments

    UPPAbaby's no-rethread harness, eight-position headrest, and four-position recline all adjust with a quick adjustment as your child grows.

    When spills happen, you can appreciate the seat base fabric can be removed for easy cleaning.

    Sippy cup or water bottle, the KNOX includes a removable cup holder that can attach to either side of the seat. 


    Energy Response Technology

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

    Protection that’s heads above the rest! Absorption and recovery properties of specialized foams in the Active Support Headrest to provide advanced side impact protection that grows with your child.

    Positioned on the side of shell and always engaged, the Side Impact Pods absorb and deflect crash forces during a side impact crash. Strategic placement of EPP foam between the inner and outer shell ensures forces are absorbed into the seat rather than the child.

    Dimensions: 23.8” L x 18.8” W x 27.4–32.5” H
    **A shipping charge may apply outside of NS, NB or PEI - please call for details.

    Includes Nurtured's no charge In Store or Virtual CERTIFIED Car Seat installation Assistance - Appointment Required

    Nurtured Offers Complimentary Car Seat Installation & Stroller Assembly

    *with the purchase of any car seat or stroller.

    Virtual Installation appointments are available.

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