SIHOO M18 Ergonomic Office Chair, High Back Mesh Desk Chair with Adjustable Headrest & Lumbar Support, 330lbs Capacity Computer Chair with 2D Armrests & Wide Cushion, Tilt Lock, 2 Packs-Black
Condition: New
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30-day refund/replacement
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.
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Availability:
In Stock.
Arrives
Sep 23 – Sep 24
Recently Viewed
Color: Black
Size: Pack of 2
Features
- ERGONOMICE OFFICE CHAIR- The ergonomic chair provides 4 support points (head/back/hip/hands) and proper lumbar support. SIHOO designs ergonomic chairs to meet different needs, with seat height, headrest adjustment, lumbar support and back support adjustment, suitable for long sitting and reduce your pain. Suitable for people 5'6" to 6'2" tall.
- For Home and Work SIHOO chairs can be applied in different scenarios according to the needs of different consumers in needs. Can be used as student office chairs, computer chairs, ergonomic chairs, desk chairs, gaming chairs; not only can sit comfortably, but also save money;
- Breathable Mesh Mesh Office Chair Premium Backrest features flexible non-pattern mesh fabric while keeping your back cool and comfortable, allowing you to sit focused and relaxed at the same time.
- High Quality & Easy AssemblyThis home office desk chair passed the BIFMA test and the 1136kg static pressure test. Our ergonomic office chair can support up to 150kg. Simple instructions allow anyone to put the chair together in eight easy steps.
- Satisfaction GuaranteedCustomer satisfaction is our first priority. Free returns and refunds within 30 days if the SIHOO office chair is faulty or if there are any other quality-related issues. We promise to provide free replacement parts during the 3-year warranty period. If you encounter any problems, please contact us and we will do our best to find a satisfactory solution.
Description
sihoo ergonomic office chair
Brand: SIHOO
Color: Black
Material: Metal, Polyester, Polypropylene
Product Dimensions: 27.5"D x 11"W x 21"H
Size: Pack of 2
Brand Name: SIHOO
Unit Count: 2 Count
Room Type: Office
Age Range Description: Adult
Included Components: Arm Pad
Model Name: M18-M159
Indoor Outdoor Usage: Indoor
Model Number: M18
Number of Packs: 2
Manufacturer: SIHOO
Manufacturer Part Number: M18-M159
Set Name: 2-pack
Number of Items: 2
Reclining Position Count: 1
Maximum Weight Recommendation: 330 pounds
Color: Black
Back Style: Solid Back
Style Name: Modern
Pattern: Solid
Shape: L-Shape
Arm Style: 2D
Leg Style: wheels
Item Dimensions D x W x H: 27.5"D x 11"W x 21"H
Size: Pack of 2
Item Weight: 20 kg
Seat Height: 18 inches
Seat Depth: 17.91 inches
Seat Length: 20.08 inches
Item Dimensions: 27.5 x 11 x 21 inches
Material Type: Metal, Polyester, Polypropylene
Frame Material Type: Aluminum
Seat Material: Memory Foam
Upholstery Fabric Type: Mesh
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sep 23 – Sep 24
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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Top Amazon Reviews
Color: Deep Black
Size: Pack of 1
I’ve always had a leather executive-style chair, but with the Florida heat and some back pain, I decided it was finally time to try something different. I’m really glad I did. The mesh is a huge improvement for keeping cool, and the chair is extremely comfortable even when I’m sitting in it for long periods of time. The back support is excellent and has made a noticeable difference compared with my old chair. Everything feels sturdy and well made, and the adjustments make it easy to get the chair exactly where I want it. Assembly was straightforward and the instructions were easy to follow. I also really like the overall appearance. It has a clean, modern look, the black color goes with everything, and it looks much nicer in person than I expected. After using it, I honestly don’t see myself going back to a traditional leather office chair. Very happy with the quality, comfort, support, and overall design. Easy 5 stars.
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Reviewed in the United States on August 25, 2026 by David Trippe
Color: Black
Size: Pack of 1
I've been looking for a new chair to replace a cheap $30 chair i bought off of Amazon last year that had been killing my back and shoulders. I wanted something in the $150-$200 range and settled on the M18. Shipping was a fast 3 days with Prime and the box arrived in great condition. All parts were separately wrapped or in their own boxes. Came with all hardware and nothing was missing. Assembly took me a little longer then normal because i have rotator cuff injury in my left shoulder so that arm is mostly useless. The most difficult part for me was attaching the wheels to the base. Other then that it was simple. Once the chair was assembled i sat in it for the first time and started making my adjustments with the recline feature, armrest level along with the headrest. Next i reached around for the lumbar support knob and tried to adjust it but with my bad shoulder i decided to just get out of the seat and turn it around and adjust it with both hands. After spinning the chair a round to get at the lumbar knob i noticed a large crack in the plastic in the middle of the back of the lumbar plastic piece. I had not made any lumbar adjustments yet so i assumed this is how i received it. The lumbar support comes preinstalled to the backrest so it either was damaged before or during the shipping process. Either way it was damaged before being delivered to me. The lumbar support still functioned properly but it was still broken. I decided to contact Sihoo's customer support that came along with the installation instructions regarding the damaged lumbar piece. I received a reply the next day and after sending them some more info about my order and a couple pics they shipped me a replacement part which took a week to arrive. I swapped out the damaged part and after owning the chair for a week so far i am really happy with my purchase. Im about 5'10 180lbs. At its highest height level my feet reach the ground comfortably flat footed. The backrest fully covers my back and the headrest adjusts very well to sit on the back of my lower head/upper neck. The armrests only go up and down....not forward and back or tilt inwards. This is fine for me as they are grooved to fit your forearm while sitting at your desk/keyboard. The armrests are also a soft cushioned rubber material...not a hard plastic. The mesh of the backrest and headrest are good material and seem well made. The seat is very wide and the cushioning is firm which i prefer. Usually more firm cushioning seems to last longer and hold its form. The base of the chair is VERY sturdy and made of all metal. My chair is on carpet and holds its position very well. As far as recline goes you can set it to recline all the way back, half way or lock the chair in the upright position. You can also adjust the resistance on the reclining feature. So that being said im very happy with my purchase. It arrived with a slight flaw which the company corrected in a fast manor and was very polite in their customer support. I personally don't have a lot of experience with many office chairs and have never used a high end chair($500-$1000+) chair before to make any comparisons. All my chairs for the most part have been from local stores like Staples or Office Depot. Id recommend this over anything they carry in this price range....and i went and looked at their products before buying this chair as well.
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Reviewed in the United States on September 1, 2023 by Dre
Color: Light Grey
Size: Pack of 1
Excellent chair. Great support for the back. Very comfortable and can easily sit long hours without discomfort. Looks durable. Assembling took me an hour.
Reviewed in the United States on September 2, 2026 by Roy Antony
Color: Light Grey
Size: Pack of 1
I am very pleased with the SIHOO B100 Mesh Office Chair. It is comfortable, supportive, and well-designed for long hours at a desk. The breathable mesh helps keep the chair cool, while the ergonomic design provides excellent back support and encourages better posture. It also feels sturdy, adjusts easily, and has a clean, modern appearance. Overall, this chair offers excellent comfort and quality for the price. I highly recommend it!
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Reviewed in the United States on September 1, 2026 by John Hostinsky III
Color: Light Grey
Size: Pack of 1
Really comfortable chair! 😊 The back support feels great, the mesh keeps it nice and breathable 🌬️, and there are plenty of adjustments to get comfortable. Assembly was straightforward 🔧 and it feels sturdy and well made. Very happy with it so far! 👍⭐
Reviewed in the United States on August 31, 2026 by Abhi
Color: White Frame Gray
Size: Pack of 1
I was hesitant at first, but I freakn love this chair! It was surprisingly easy to put together and is so comfy. I've been using it for three months and its still holding up. I like that I can take off the headrest (I'm not a headrest girlie). My one critique is I wish the arm rests would adjust back and forth, but they do adjust up and down. It's also pretty cute, which is a plus.
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Reviewed in the United States on September 8, 2026 by Jennifer H Moon
Color: Deep Black
Size: Pack of 1
This chair is comfortable. The last office chair I owned, the cushion had began to bottom out so I knew that I wanted to try a mesh chair instead. I was able to snag the B100 at a pretty good deal. Assembly was straight forward and all the nuts and bolts were clearly labeled with the included tools. I'm about 5'6'' at around 200 lbs and I can comfortably sit in this chair for +6 hours. If I really want, I can lean back in the chair and take a small nap in it. The arm rests are solid and I like the back support. I only wish I had gotten the version with the foot rest. Oh well. I recommend this chair to my friends and family and they generally agree with me.
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Reviewed in the United States on August 21, 2026 by Jared
Color: Light Grey
Size: Pack of 1
“This chair is very comfortable and has been a great addition for my collage son. It has good support, is easy to adjust, and looks very professional. The mesh back keeps it comfortable during long workdays, and the overall quality feels sturdy and well-made. I would definitely recommend this chair to anyone looking for a comfortable work chair for a student!
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Reviewed in the United States on August 25, 2026 by lisa