UPPAbaby KNOX Convertible Car Seat - Jake (Black Melange)

UPPAbaby KNOX Convertible Car Seat - Jake (Black Melange)
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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.

Key Features

  • SMARTSecure® System with red-to-green tightness indicator provides visual confirmation the car seat is installed correctly
  • 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 reduces seat rotation and stress on the child’s head and neck upon impact
  • Two-piece fit inlay allows for flexibility and proper fit
  • No-rethread harness adjusts with eight-position headrest
  • Side Impact Pods for additional impact absorption
  • Active Support Headrest that grows with your child
  • EPP foam between the inner and outer shell ensures forces are absorbed into the seat
  • Color coded belt paths with robust tensioning clips
  • Multi-position, adjustable foot for leveling
  • Storage pockets for harness buckles
  • Bead level indicators on both sides of the seat
  • Removable cup holder included
  • Removable and washable seat fabric
  • One naturally fire resistant option through innovative use of Merino wool


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)

Product Reviews
out of 5.0
12 Reviews
Ratings Snapshot
of Reviewers
Branchville , NJ
Verified Buyer
The best
May 19, 2024
After using the messa I knew I wouldn’t even use another car seat brand! Uppababy products are superior to everything else on the market. I love the guidelines for attachment, the red/green indicators are so helpful in knowing your car seat is attached properly
Fresno, California
Verified Buyer
Upgraded to the next seat!
March 1, 2024
Really nice and sleek car seat! Easy to install. Our kiddo has outgrown the Mesa and now using this one!
Selinsgrove, PA
Verified Buyer
Quality car seat
January 17, 2024
Nice solid car seat and base, however it is heavy.
  • solid, sharp
  • heavy
SLC, Utah
Verified Buyer
We love it!
December 1, 2023
Beautiful and comfy car seat for my growing 1-yr-old! We have this seat in one of our vehicles so that we aren't lugging a carseat back and forth between them. It feels very secure and every function and detail appears to be thoughtful toward baby & parents.
  • Plush and padded/cozy, super strong/reinforced/heavy duty, baby rides in comfort
  • heavy, thorough cleaning isn't easy
Ramoncito F.
Miami, Florida
Verified Buyer
December 8, 2022
I bought it for my granddaughter's baby and she absolutely adores it. Very strong and very comfortable for the baby....She was shopping for quite a while and she says this chair is by far the best in the market..
Mobile, AL
Verified Buyer
November 21, 2022
I purchased this for a friend as a gift for her son! She absolutely loves it. Easy install, comfy, safe. Her sister’s kids use the same seat as well and have had a wonderful experience using it for the last several years!
Verified Buyer
Great convertible car seat
July 25, 2022
My child loves this car seat! Straps are long and easy to tighten. Seems comfortable! Easy transition from the mesa.
Verified Buyer
Great Seat!
March 17, 2022
I was so excited about this purchase! I’d been using a different brand convertible car seat for my older son, but decided to order the Knox for my younger son. And while I agree with some reviews I read about it being rather large, I love the entire construction of this seat. I found it easy to install using the latch system. My son seems to enjoy it too! I would definitely recommend this seat!
Verified Buyer
Sturdy Car seat, but extremely annoying to install
December 17, 2021
Car seat is built well with quality materials. The seat is a little larger and heavier than I thought it would be. I couldn’t see out of the window at all that the seat was in front of when installed in my sedan. I thought the indicator telling you when the car seat was installed tight enough and the extra support strap was a great touch, but when it came to actually installing the seat it was extremely frustrating. I installed the seat 5 times in two days and it was still so loose. I then looked into the seat a little further and saw there was a recall on the 2020 model for this reason. The 2021 model I had is still a problem in my opinion. I wouldn’t recommend this car seat. We also have a Nuna Rava; it’s worth the extra money. I ended up selling this one and buying another Nuna Car seat.
  • Built of high quality materials
  • Sturdy
Best Uses
  • In an SUV type vehicle
  • Difficult to install
  • Heavy
  • Larger than other convertible car seats
upstate NY
Verified Buyer
Matches my older sons booster seat!
May 23, 2021
We purchased my 6 year old the Alta in this colorway and I LOVE that they match. I did a lot of research on seats for them and was really excited with the safety of the Knox and quality uppababy has always offered.
It has this strap that when rear facing you still hook onto the cars upper anchors and my 9 month old really enjoys touching it. Not sure how viable it will be long term but for now it's fine. The seat itself is very tall. We have this in a 2008 Ford fusion sedan and i have to be careful putting him in it as I have baked his head once on the top of the car. We also still have all the padding in it so perhaps when he's bigger and we take the padding out it will be easier to get him in. Or I might move it into my husband's jeep so it's less bending to put him in and more just going from arms to seat.
Samantha M.
Atlanta, Ga
Verified Buyer
Safe, Comfortable & Beautiful
April 30, 2021
This car seat has it all. I switched my daughter from the Uppababy Mesa to the new Knox and she absolutely loves it. Not sure if I can mention other brand names, but we purchased a comparable one as far as price and a designer name, and we did not like it near as much as this one. Highly recommend!
Tyler tx
Verified Buyer
April 21, 2021
I absolutely love it so much amd my little girl loves it as well
Customer Q&A
1 Question & 1 Answer
Ashley Gaston
from Albany, ny asked:
March 18, 2021
Does this fit into the uppa baby vista v2? And I hat would it need to convert. If so? Are the bases different from the Mesa? 
This type of seat does not fit onto strollers and does not have a detachable base.
Submitted by: Albee Baby on March 18, 2021