MUXX.STIL Office Chair, Ergonomic Desk Chair with Adjustable Lumbar Support and Flip up Armrest, Breathable Mesh Computer Chair for Home Office, Black
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Availability:
In Stock.
Arrives
Saturday, Jul 25
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Color: Black
Features
- Enhanced Lumbar SupportThis office chair features a large and adjustable lumbar support cushion filled with thick sponge to cradle your lower back and help you maintain a comfortable posture for long hours of work. It also has an S-shaped ergonomic backrest that aligns with your spine and reduces pressure and muscle fatigue.
- Space SavingThe armrests of this desk chair can be flipped up 90 to fit different needs and save space. You can slide the chair under the desk when not in use. The armrests are contoured to match your arms shape and have soft padding to protect your wrists and elbows. The computer chair can be adjusted in height by 3.74 inches and swivel 360 for convenience.
- Versatile UseThe rubber mute wheels of this mesh chair roll smoothly and quietly without scratching your wooden floor. You can also recline the chair by pulling out the lever and enjoy a relaxing break from work. This chair is suitable for various settings, such as office, living room, study room, meeting room, etc.
- Comfortable & SafeMuxx.Stil ergonomic office chair has a U-shaped seat cushion filled with high-density foam that conforms to your body and relieves pressure on your thighs and hips. The seat also has a waterfall edge design that promotes blood circulation in your legs. The breathable nylon mesh material allows air circulation and keeps you cool all day long. Max capacity: 264 lbs.
- Easy To Assemble & 15-year WarrantyYou can easily set up this mesh chair in 15-20 minutes with the provided instruction manual, video, and tools. All task chairs come with a 15-year warranty, so please feel free to contact us if you have any questions or issues. We will provide you with effective assistance.
Brand: MUXX.STIL
Color: Black
Material: Polyethylene
Product Dimensions: 20.5"D x 25.6"W x 38.2"H
Size: 20.5"D x 25.6"W x 38.2"H
Brand Name: MUXX.STIL
Additional Features: Flip armrest, Large Adjustable Lumbar Support
Unit Count: 1.0 Count
Recommended Uses For Product: Gaming, Office, Reading
Room Type: Bedroom, Office, Study Room
Age Range Description: Adult
Included Components: Assembly Accessories, Installation Manual, Office chair
Model Name: UMB01BK01
Surface Recommendation: Hard Floor
Indoor Outdoor Usage: Indoor
Model Number: UMB01BK01
UPC: 783970061850
Manufacturer: MUXX.STIL
Manufacturer Part Number: UMB01BK01
Item Type Name: office chair
Material Type: Polyethylene
Frame Material Type: Fabric Seat
Product Care Instructions: Dry Clean
Seat Material: Cotton
Fill Material: Sponge
Upholstery Fabric Type: Mesh
Maximum Weight Recommendation: 264 Pounds
Assembly Instructions Description: Includes assembly instructions and necessary tools. Follow the provided manual and tools to assemble the chair.
Required Assembly: Yes
Color: Black
Back Style: Mesh Back
Style Name: Modern
Pattern: Solid
Finish Types: Nylon
Theme: Modern
Shape: Rectangular
Arm Style: Flip-up armrest
Furniture Finish: Nylon
Cushion Style: Waterfall-Shaped
Leg Style: Tapered Leg
Form Factor: Upholstered
Item Dimensions D x W x H: 20.5"D x 25.6"W x 38.2"H
Size: 20.5"D x 25.6"W x 38.2"H
Item Weight: 26.4 Pounds
Seat Back Interior Height: 20.5 Inches
Seat Height: 21.6 Inches
Seat Depth: 20.1 inches
Seat Length: 19.7 Inches
Arm Height: 31.7 Inches
Chair Backrest Width: 19.3 Inches
Item Dimensions: 20.5 x 25.6 x 38.2 inches
Item Depth: 20.5 inches
Furniture Base Movement: Swivel
Reclining Position Count: 2 to 5
Tilting: Yes
Is Customizable?: No
Is Foldable: No
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Jul 25
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Color: Nori Black (Pu Leather Seat)
I’ve been using this ergonomic office chair for about a week now and honestly it’s one of the best upgrades I’ve made to my workspace. The chair was easy to assemble, feels very sturdy, and the mesh back keeps it breathable during long work sessions. The lumbar support is surprisingly comfortable and actually helps with posture, especially if you sit at a desk for hours every day. The seat cushion has the right balance of firmness and comfort, and I like that the armrests and height are adjustable to fit different setups. The wheels roll smoothly and the chair feels stable even when leaning back. Pros: ✔️ Comfortable for long hours ✔️ Great lumbar support ✔️ Breathable mesh back ✔️ Smooth rolling wheels ✔️ Modern clean look
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Reviewed in the United States on May 15, 2026 Reviewed in the United States on May 15, 2026 by Ivana
Color: Khaki
Absolutely love this chair! It was very easy to put together and looks beautiful in my office. The cushion is comfortable, the chair feels sturdy, and it rolls smoothly. I can sit for hours while working without feeling uncomfortable. The color and modern design make my workspace look so much nicer. Great quality for the price and definitely worth it!
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Reviewed in the United States on May 18, 2026 Reviewed in the United States on May 18, 2026 by Marvella scott
Color: Khaki
The assembly directions were clear and accurate. I put the chair together in little more than an hour. As I sit in it, I can say that the adjustments for height, lumbar support, lean, and swivel make it quite comfortable. When the arms are up it fits nicely under the desk. In short, everything I want in a work chair.
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Reviewed in the United States on February 15, 2026 by Amazon Customer
Color: Cream Khaki (Pu Leather Seat)
This is an excellent computer chair—it looks beautiful, is of very high quality, and, on top of that, appears quite elegant. If you are thinking about buying it, go for it! It is a spectacular chair that is quite comfortable; it feels like it will be very durable, and it features adjustable armrests as well as adjustable lumbar support. Honestly, I am extremely happy with this chair; anyone considering purchasing it shouldn't hesitate—just buy it!
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Reviewed in the United States on May 16, 2026 Reviewed in the United States on May 16, 2026 by ricardo
Color: Cream Khaki (Pu Leather Seat)
I absolutely love this chair! I bought it for my desk setup and honestly it exceeded my expectations. The cream/white color looks very elegant and clean, and it matches perfectly with minimalist or feminine spaces. It was relatively easy to assemble and arrived well packaged, with all the pieces protected. The chair feels sturdy while still being very comfortable. The seat is nicely cushioned, and the mesh back helps keep me cool when I sit for long periods of time. I also liked that the armrests are comfortable and the overall design looks much more expensive than it actually is. I’ve used it for studying, reading, and working on my computer, and so far it has been very comfortable. If you’re looking for a cute, modern, and comfortable chair for a home office or study space, I definitely recommend it.
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Reviewed in the United States on May 25, 2026 Reviewed in the United States on May 25, 2026 by Daniela Alexandra Alvarado lopez
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 by R. Jernigan
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 by M
Color: Cream Khaki (Pu Leather Seat)
It was due time for an at-home office chair replacement and I’m so glad I came across this one. I wanted something inexpensive but good quality, somewhat aesthetically cute, and easy to clean (the PU leather seat option is great). It was fairly easy to assemble and I’m pleased with the comfort and design of the chair. Would highly recommend if you’re looking for an affordable option that’s easy to clean, cute, and won’t take up too much space.
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Reviewed in the United States on March 7, 2026 by Julia