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Extended holiday returns
FREE refund/replacement until Jan 31, 2027 Learn more
FREE refund/replacement until Jan 31, 2027 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Thursday, Nov 19
At a glance
- Condition
- New
- Color
- Black
- Model
- HJ3-DM-3789F-BK
- Dimensions
- 28.7 x 28.7 x 50.3 in
- Weight
- 30.4 lb
- Material
- Mesh
- Size
- 28.7"D x 28.7"W x 50.3"H
- In the box
- 1*Office Chair
Features 5
- Ergonomic Office Chair: The Executive high back office chair with adjustable headrest, armrests and lumbar support can properly support your neck, back and arms, which makes you sit healthier.Enjoy the freedom to relax with chair's 120 rocking mode
- Adjustable Lumbar Support&Headrest: The headrest of this ergonomic chair is adjustable in height and 42 angle to meet the needs of work and relaxation. The mesh lumbar support can be adjusted up and down,freely to fit the lumbar area more closely
- Breathable & Comfortable: Ergonomic features an all-elastic premium mesh back and a high-density sponge seat making the mesh office chair a good choice for all-day comfortable office seating. The unique mesh design is skin-friendly and breathable
- Smooth Movement & Stability: Our chair comes with smooth and multi-direction casters, allowing you to move the chair around effortlessly. It can run smoothly on tile, wooden floors, carpets, and other floorings. The maximum weight capacity is 275 lbs
- Space-saving: Flip-up armrests are available and won't be in your way when not in use. The Armrests of the computer chair provide comfortable support for your arms and can be flipped up to save space effectively while not in use
Description
Good furniture can turn a house into a home! We hope that DUMOS furniture can serve as a companion to witness your relaxing moments at home and happy moments with your family. DUMOS's professional team works hard to understand your needs, devoting all their energy to creating safe, beautiful, high-quality, and functional furniture for you. The ultimate pursuit of DUMOS is to make you and your family feel happy!
Specs 42
| Brand | DUMOS |
|---|---|
| Color | Black |
| Material | Mesh |
| Product Dimensions | 28.7"D x 28.7"W x 50.3"H |
| Size | 28.7"D x 28.7"W x 50.3"H |
| Brand Name | DUMOS |
| Additional Features | Adjustable Headrest |
| Unit Count | 1 Count |
| Recommended Uses For Product | artist, designer, engineer, executive, gamer, home user, office worker, professional, programmer, student, writer |
| Room Type | Office |
| Age Range Description | Adult |
| Model Name | Executive Office Ergonomic Desk Chair |
| Surface Recommendation | Hard Floor |
| Indoor Outdoor Usage | Indoor |
| Model Number | HJ3-DM-3789F-BK |
| Number of Packs | 1 |
| Item Highlight | 275 LBS, High Back, 2D Headrest, Adjustable Lumbar Support, Flip-up Armrests, Swivel Wheels, Black |
| Manufacturer | DUMOS |
| Item Type Name | 275 LBS Home Mesh Chairs with Wheels, 2D Headrest, Up&Down Lumbar Support, Swivel High Back Computer Chair with Flip-up Armrests, Black |
| Manufacturer Part Number | HJ3-DM-3789F-BK |
| Number of Items | 1 |
| Reclining Position Count | 1 |
| Maximum Weight Recommendation | 275 pounds |
| Back Style | Adjustable knob, Double backrest, Split backrest |
| Style Name | With Headrest |
| Pattern | Solid |
| Theme | Computer Chair, Desk Chair, Ergonomic Chair, Executive Chair, Home Office, Office Chair, Office Furniture, Swivel Chair, Task Chair, Workstation |
| Shape | Rectangular |
| Arm Style | Flip-up |
| Cushion Style | High elastic sponge |
| Leg Style | pedestal |
| Form Factor | Swivel |
| Item Dimensions D x W x H | 28.7"D x 28.7"W x 50.3"H |
| Item Weight | 30.4 pounds |
| Seat Depth | 20 inches |
| Item Dimensions | 28.7 x 28.7 x 50.3 inches |
| Material Type | Mesh |
| Frame Material Type | Metal |
| Product Care Instructions | Wipe Clean |
| Seat Material | High elastic sponge |
| Fill Material | High elastic sponge |
| Upholstery Fabric Type | Mesh |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Nov 19
Yes, absolutely! This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027.
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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Top Amazon Reviews
Solid Office Chair
Color: Classic Gray
I’m an artist and a student—so I’m literally always at my desk. I’m giving this chair 5 stars simply because it does exactly what it says it does. It’s a standard desk chair with the back support I was looking for. My last desk chair didn’t have any neck support. I have narcolepsy so I can’t control when I fall asleep. With my old chair, I was seriously hurting and nearly injuring my neck due to sleep attacks. My head would droop back with nothing to stop it—if you’ve ever fallen asleep in class you’ll know what I’m talking about. In terms of neck safety, this chair has been a lifesaver for this narcoleptic! ☺️ Additionally, the arms lift up which allows me to sit comfortably cross-legged if I want to. The lumbar support in the back helps because it prevents me from sitting back and falling asleep, as well as slouching in the chair. While this chair isn’t great in terms of super comfy padding and whatnot, it’s great for those who are consciously trying to improve and maintain healthy posture. It moves around just fine too! Though I recommend a chair mat or something similar for those who have wood floors as I do. Aesthetically, matches a lot better than I thought it would. I like a lot of color in my home so this thing helps with balance. Lastly, it was super easy to build—process went faster because I used my own ratcheted screw driver with the screws that came in the box.
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Reviewed in the United States on September 30, 2026 by Ash Bonita
Stylish and well built.
Color: Classic Gray
I honestly was not expecting this much from the chair. I give it 5 tanks, because that is how it's built. By looking at the photos online I couldn't understand how the lumbar support could be so large, but it is sooooo comfortable across your whole back. You can adjust it up or down with just one turn of the large knob on the back. The seat is firm, and wide enough for larger guys like me. The directions for the most part were very easy, and the parts that weren't is because I was simply overthinking it. Easy to assemble with the wrench provided. The arms easily swing up for more width, and the seat swivels. My old chair now in dumb didn't and I just took it for granted. The chair is study, but comfortable. Definitely a good choice.
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Reviewed in the United States on September 15, 2026 by Yoshikawa
Perfect chair
Color: Classic Gray
Love love love this chair. It looks very professional and is so comfortable. I had to figure out how to recline it. I kept telling my husband it reclines, he says I don't think so but I finally figured it out. Those directions could be a little clearer but it ended well. The back support feels so good. I am very happy with this chair and the price was unbelievably low!
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Reviewed in the United States on September 11, 2026 by Rhonda Bridgeford
A nice chair
Color: Classic Gray
This is actually a nice chair. I did not care for the lumbar support. It was excessive, resulting in my head not reaching the headrest effectively or comfortably. I removed it. The chair is wide, and the arms work really well. Feels sturdy. I love it. I'll order another one.
Reviewed in the United States on October 13, 2026 by Orotund Laevophallus
Arms that flip up!
Color: Classic Gray
I work from home three of my four the Houthi shifts. I do computer work so I sit for those ten hours. My 15 year old, cheap chair from one of those big box store, has no cushion left! I looked at several chairs and chose this one. It was very easy for this 65 year old to put together! And I did it by myself! It’s made with mesh so it’s stays cool. It’s a great color. Goes well with the other furniture in the room. I really like the adjustable lumbar support and the head rest. The one thing that made me choose this chair over the others is that the arms lift up so the chair can be pushed completely under my desk.
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Reviewed in the United States on October 6, 2026 by Snorky29
Comfortable and easy to install
Color: Classic Gray
I love it, very comfortable and easy to install, it took me less than 30 minutes to install it.
Reviewed in the United States on September 18, 2026 by Mohamed Amine bouab
Very uncomfortable
Color: Classic Gray
One of the most uncomfortable office chairs I sat at. The lumbar support part is protruding so far forward that my back does not rest against the back of the chair. The said back of the chair is slanted backwards. I would have to lie back in order to get any support for my shoulders. If I remove the lumbar support part, I can rest my back against the back of the chair, but, well, there is no lower back support. To top it all off, there are errors in the instructions. The bolts I'm supposed to use do not fit the openings, and the number of them are not correct. I had to to figure out which bolts to use by trying different sizes and seeing which ones fit the opening. I just spent 2 hours assembling this thing and now we'll have to spend more than that to take it back apart to return it.
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Reviewed in the United States on August 30, 2026 by For_sure
Great for Back support
Color: Classic Gray
Great chair. Back issues with chair was using. From day 1 felt a big difference. Definitely recommended. Comfortable and durable
Reviewed in the United States on September 19, 2026 by Erika G