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Description
uppababy britax car 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
4.4 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Lightweight and sturdy: A Great Foldable Bed Frame
Size: Full, Style: 14 Inch ( Foldable)
I’m very happy with this bed frame.
Pros: Assembly is super easy (it took me about 5 min), and it’s lightweight. The frame is sturdy and silent; there are no squeaks when I move or sleep. No box spring is needed, which is a big plus.
Cons: The only issue I had was a bolt that didn’t tighten fully due to bad threading, but it didn't affect stability.
Overall, I highly recommend this bed frame for its practicality and quality.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
The Best Affordable Twin Bed Frame
Size: Twin, Style: 14 Inch ( Non - Foldable), Size: Twin, Style: 14 Inch ( Non - Foldable)
I’m honestly so impressed with this twin-size metal bed frame. I was looking for something affordable but still sturdy and safe for my toddler, and this checked every box.
Assembly was super simple, I put it together by myself without any stress, which is a huge win. The frame feels solid, doesn’t squeak, and gives me peace of mind knowing my little one is sleeping safely.
It’s also a great height, not too high, not too low, making it perfect for a toddler transitioning into their own bed. For the price, the quality really exceeded my expectations.
If you’re looking for a budget-friendly, easy to assemble bed frame for a child, this is definitely worth it!
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Great frame for a pinch!
Size: Full, Style: 18 Inch ( Foldable)
Needed foot surgery and was in need of a frame that I could assemble quickly on my first floor since I was having foot surgery in 2 days. Arrived quickly, unfolded the 2 pieces, connected the two frames together with 2 wing nuts. Assembly took 5 minutes. Super simple! It seems sturdy and the 18 inch frame is high enough to allow me to stand from it on one leg. Great buy!
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Reviewed in the United States on May 29, 2026
★★★★★ 5
Sturdy, Affordable and Easy To Set Up
Size: King, Style: 18 Inch ( Foldable)
This was so easy to set up and is super sturdy! It has transformed my bedroom! I was able to stack multiple storage containers under the bed, add an extra long bed skirt and walaa! My favorite part is that my mattress is no longer sinking in spots where the boxsprings were faulty. My 13 yr old and 16 yr old had this set up for me in under 30 minutes. My husband is 6'3" and 180 lbs. I was hesitant thinking we would break the bed within a week but it has upheld!!!
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Reviewed in the United States on April 24, 2026
★★★★★ 4
Mixed feelings so far
Size: Queen, Style: 14 Inch ( Foldable), Size: Queen, Style: 14 Inch ( Foldable)
**TWO MONTH UPDATE: overall I still like the bed frame. I appreciate the ample amount of storage underneath the frame, to put stuff underneath when company comes and you need to stash stuff out of sight.
The frame does wiggle a lot with any extra activity, but that's kind of expected with a foldable frame I suppose.
*INITIAL REVIEW: I will update this review in a few months, after several rounds of overnight visitors have used this queen size frame and a 6" foldable foam mattress. I think this will be a good purchase and offer a better night's rest than the air mattress I was previously using for company.
PROS:
- very simple setup and take down
- easy to store away, not bulky
- nice height off the ground to help my guests feel comfortable and easily get in and out of the bed
- appears to be a sturdy frame made (I will update after a few months of use)
- fast, free shipping
CONS:
- arrived with scuffs on the frame
- a lot of the metal mattress supports are not straight, indicating poor craftsmanship, but time will tell
- made in China
- scoots across wood floor easily, so if you're planning to use on hardwood floors you may want to add those rubber pads to the bottom of the legs to prevent it from sliding when you get in and out of the bed
- the two bolts that connect the two frames together (queen size frame) might get lost, it would be cool if they were attached somehow, but for now I'm just keeping them bolted to one frame while in storage.
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Reviewed in the United States on July 1, 2025