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Description
uppababy convertible seat UPPAbaby Knox Convertible Car SeatAt A Glance Features The UPPAbaby Knox Convertible Car Seat has the following Quick glance features: Meet the UPPAbaby Knox, UPPAbaby's new convertible car seat. Do you have (and love) the UPPABaby Mesa Infant Car Seat? Then you will love the Knox. UPPAbaby Knox Convertible Car Seat Safety Features Koroyd technology welded tubes crumble in a collision to absorb the force and minimize the energy transferred to the child. Side Impact Pods located on the
At-A-Glance Features
The UPPAbaby Knox Convertible Car Seat has the following Quick glance features:
Meet the UPPAbaby Knox, UPPAbaby's new convertible car seat. Do you have (and love) the UPPABaby Mesa Infant Car Seat? Then you will love the Knox.
UPPAbaby Knox Convertible Car Seat Safety Features
- Koroyd® technology - welded tubes crumble in a collision to absorb the force and minimize the energy transferred to the child.
- Side Impact Pods located on the side of the car seat's shell absorb crash force in a side impact crash.
- EPP foam located strategically between the inner and outer shell absorbs collision forces.
- Multi-Directional Tether - this unique tether reduces car seat rotation in a collision which decreases stress on the head and neck. In rear-facing mode, the tether has been shown to reduce potential injury by 45%.
UPPAbaby Knox Convertible Car Seat Features
- Rear facing: 14 lbs - 45 lbs
- Forward facing: 25 lbs - 65 lbs
- Removable cup holder that can be installed on either side of the car seat.
- Removable seat base fabric.
- No-rethread harness
- 8 position headrest
- 4 recline positions
- Several fabric options available, including the naturally fire-retardant (chemical free) Jordan.
- Limited Lifetime Warranty - register the Knox within 3 months of purchase and receive a warranty good through the car seat's expiration
UPPAbaby Knox Convertible Car Seat Specifications
|
Child Weight (lbs) |
14 - 45 lbs (rear facing) 25 - 65 lbs (rear-facing) |
|
Child Standing Height (in) |
Up to 49 inches |
|
Car Seat Weight |
33 lbs (forward facing) |
|
Car Seat Dimensions |
23.8” L x 18.8” W x 27.4–32.5” H (height range reflects low and high headrest positions) |
|
Child Age |
Approximately 1-6 years old |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 2450 reviews
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Product Reviews
★★★★★ 4
A step up, but still room for improvement
Color: Cream Khaki (Pu Leather Seat)
Yikes, the *shilling* on the reviews for this thing! Yes, it's a chair. There are a lot of mesh-backed office chairs for sale here. None of them are likely to change your life.
I can say this chair is a step up in quality from the few others I've purchased online in the past. All hardware below the seat cushion is heavy steel; you won't be breaking this stuff in the near future--and it's a nice change from the almost-entirely-plastic offerings I see elsewhere.
The provided hardware was packaged intelligently: it's all screws (and not too many of them) with various lengths, but they all have the same size hex-head and the package includes a nice matching T-bar to install them; moreover, if you follow the instructions it's basically "use the screws labelled Step 1 now" then "use the screws labelled Step 2 now"--hard to get wrong.
The best part of the chair is the lumbar support. It's why I selected this particular variant, and it was a good choice: it's firm and adjustable and makes a difference. The back is comfortable, and the general motion of the chair (rocking, locking, up/down, swivel, roll) is exactly as you'd expect.
I don't like arms on my chairs: when they're down I rest my elbows there but they're always too high so it bothers my shoulders eventually, and when they're up my elbows bump into them. So I usually remove the arms entirely during assembly--and in this chair that wasn't too hard, but it does leave some slightly unsightly connection points hanging free. That's not a mark against the chair itself--just letting you know; at worst I could point out that this chair's arm movement is maybe a little more limited than usual.
The worst thing about this chair, though, is the cushion. I got the leatherette seat, because it's supposed to be comfortable and easy to clean. In practice it's *not* comfortable at all: it's soft enough, sure, but it's also *very* hot and makes me squirm repeatedly to try to improve my comfort the longer I sit here. I suggest getting the mesh-bottom version, if you're going to get this model.
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Reviewed in the United States on March 30, 2026
★★★★★ 5
Ergonomic Desk Chair
Color: Nori Black (Pu Leather Seat), Color: Nori Black (Pu Leather Seat)
I am delighted with this chair. First of all, assembly was super easy, thanks to the instructions included in the box. The faux leather design combined with the mesh backrest gives it an elegant look while ensuring comfort. I love its size, it is substantial enough to feel supportive, yet not so bulky that it takes up too much space; this allows it to fit perfectly under my desk and helps me save room. The lumbar support makes it comfortable to work at my desk for hours on end, and I really appreciate that the armrests can be easily raised and lowered. It is incredibly comfortable and durable.
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Reviewed in the United States on June 3, 2026
★★★★★ 5
Definitely happy with this purchase!
Color: Nori Black (Pu Leather Seat), Color: Nori Black (Pu Leather Seat)
I’m really impressed with the MUXX.STIL Office Chair. I wanted something comfortable for long work days but also stylish enough to fit nicely into my space, and this chair ended up being exactly what I was looking for.
The PU leather looks sleek and elegant, and the chair feels much more premium than I expected. It’s comfortable even after sitting for hours, with great back support and a soft cushion that doesn’t flatten out quickly. I also love how smoothly it rolls and adjusts.
As someone who spends a lot of time working, editing content, and answering messages at my desk, having a comfortable chair truly makes a difference — and this one does. It made my workspace feel more put together and cozy at the same time. Definitely happy with this purchase!
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Reviewed in the United States on May 26, 2026
★★★★★ 3
Nice-ish chair but not what I expected.
Color: Grey
Nice chair basically, good looking, and assembly went well, the wheels roll very nicely, lumbar support is good too, with comfy seat back. However, the "seat cushion" design itself is very odd, because the seat cushion is much thicker at the rear than it is at the front, thus you're constantly slipping off forward, always needing repeatedly to lift up and get back on the seat up further where you belong; while the seat tilt adjustments are of no help with this problem, no matter what setting you will be slipping off forward. The lever for adjusting reclining ability is very cumbersome and awkward to use. The arm rests are ok, comfy, but lack the ability to raise or lower, all you can do if flip it up totally out of your way. I wish I could return and exchange this chair for something better but there is no way this could easily be disassembled and returned in the box that is long since gone. This came in a box really super efficiently and very tightly packed, give them credit and kudos for the great packing design. Maybe, hopefully, the manufacturer has some suggestions for replacement when they see this review.
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Reviewed in the United States on November 7, 2025
★★★★★ 5
Surprisingly Comfortable for Long Hours
I was honestly expecting one of those oversized chairs that look comfortable in pictures but feel cheap in person. This one actually feels solid. The seat is wide without feeling awkward, and the cushion is thick enough that I don’t feel the frame underneath after sitting for a while.
The armrests being adjustable was a bigger deal than I thought, especially for working at a desk for hours. It also rolls much smoother and quieter than my old office chair.
Assembly took some time, but nothing complicated. Once put together, it feels sturdy and doesn’t wobble. The reclining function is nice too when taking breaks or watching videos.
Overall it feels more “heavy duty” than most chairs in this price range.
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Reviewed in the United States on May 25, 2026
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