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SIHOO M18 Ergonomic Office Chair for Big and Tall People Adjustable Headrest with 2D Armrest Lumbar Support and PU Wheels Swivel Tilt Function Black

4.4 out of 5 stars 12,887 ratings

$159.99
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Color: Black
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Purchase options and add-ons

Brand SIHOO
Color Black
Product Dimensions 27.5"D x 11"W x 21"H
Back Style Solid Back
Special Feature Ergonomic, Adjustable Headrest, Arm Rest, Adjustable Lumbar, Tilt, Back Support, Adjustable Recliner
Material
Aluminum
Item Weight
36.9 Pounds
Frame Material
Stainless Steel
Seat Material Type
Polyurethane

About this item

  • 【Ergonomic 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 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 Assembly】This home office desk chair passed the BIFMA test and the 1136kg static pressure test. Our ergonomic office chair can support up to 330 lbs. Simple instructions allow anyone to put the chair together in eight easy steps.
  • 【Lifetime Warranty】 This chair is backed by a lifetime warranty. If you encounter any quality issues, please do not hesitate to contact us. Once we have verified the problem, we will promptly replace the necessary parts for you at no cost.
11" 27.5" 21" 11"

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From the brand


Product Description

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

M18 SIHOO

Merchant Video
ergonomic office chair
desk chair
office chair
office chair
mesh office chair

SIHOO - Better Brands, More Choices

SIHOO M18

SIHOO M102C

SIHOO M57

SIHOO D03 Standing Desk

SIHOO Doro C300

SIHOO S100

Customer Reviews
4.4 out of 5 stars 12,887
4.2 out of 5 stars 1,604
4.4 out of 5 stars 7,097
4.2 out of 5 stars 138
4.3 out of 5 stars 945
3.5 out of 5 stars 9
Price
$159.99 $149.99 $229.99 $259.99 $319.99
Headrest Type
2D 2D 2D 55''x28'' Whole-Piece Desktop 3D Integral headrest
Armrest Type
2D 3D 3D Adjustable Height:28.3-47.2" 3D 4D
Recline Angle
108°-118°-128° 110°-130° 110°-116°-126° Double Cross-beam Structure 92°-100°-112° 98°-135°
Lumbar Support
2D Split 2D Lumbar Support 2D 132LBS Max Load Dynamic Lumbar Support Dual Dynamic Lumbar Support
Seat Width
51cm(20.08") 52cm(20.47") 51 cm(20.08") Ultra Quiet Design<50dB 51 cm(20") 51 cm(20.08")
Seat Depth
45 cm(17.91”) 48 cm(18.9") 46 cm (18.11") 30,000 lifting tested 42 cm (16.54") 38.5-43.5 cm(15.16-17.13")
Backrest Height Adjustment
/ / / Colors: Black, Walnut, Oak 4-segment adjustment 5-segment adjustment
Seat Height
44-54 cm(17.32”-21.26”) 45-54 cm(17.72"-21.26") 46-55 cm(18.11"-21.65") / 41-49.5 cm(16.14"-19.49") 46-54 cm(18.11"-21.26")
Overall height
109-127 cm(42.91”-50.00”) 117-126 cm(46.06"-49.60") 107-123 cm (42.12"-48.42") / 107-128 cm (42.13"-50.40") 112-127 cm(44.09-50")
Service
Lifetime Service 3 Years Lifetime Service motor:1-year;whole desk:3-year 3 Years 3 Years

Product information

Technical Details

Brand ‎SIHOO
Color ‎Black
Product Dimensions ‎27.5"D x 11"W x 21"H
Back Style ‎Solid Back
Special Feature ‎Ergonomic, Adjustable Headrest, Arm Rest, Adjustable Lumbar, Tilt, Back Support, Adjustable Recliner
Product Care Instructions ‎Wipe Clean
Unit Count ‎1.0 Count
Recommended Uses For Product ‎Office
Maximum Weight Recommendation ‎150 Kilograms
Style ‎Modern
Pattern ‎Solid
Finish Type ‎Lacquered
Room Type ‎Office
Age Range (Description) ‎Adult
Included Components ‎‎User Manual
Shape ‎Rectangular
Model Name ‎SIHOO
Arm Style ‎With arms
Surface Recommendation ‎Hard Floor
Seat Back Interior Height ‎68 Centimeters
Furniture base movement ‎Swivel
Indoor/Outdoor Usage ‎Indoor
Furniture Finish ‎Plastic
Seat Height ‎18 Inches
Seat Depth ‎17.91 inches
Fill Material ‎Sponge
Cushion Style ‎Boxed Edge
Seat Length ‎20.08 Inches
Leg Style ‎Tapered Leg
Tilting ‎Yes
Is Customizable ‎No
Is Foldable ‎No
Chair Backrest Width ‎20.47 Inches
UPC ‎657631745734
Form Factor ‎Recliner
Manufacturer ‎SIHOO
Item Weight ‎36.9 pounds
Item model number ‎M18-014
Is Discontinued By Manufacturer ‎No
Weight ‎16 Kilograms

Additional Information

ASIN B07GNDDNMW
Customer Reviews
4.4 out of 5 stars 12,887 ratings

4.4 out of 5 stars
Best Sellers Rank #8,432 in Home & Kitchen (See Top 100 in Home & Kitchen)
#23 in Home Office Desk Chairs
Date First Available April 8, 2019

Warranty & Support

Amazon.com Return Policy:Regardless of your statutory right of withdrawal, you enjoy a 30-day right of return for many products. For exceptions and conditions, see Return details.
Product Warranty: For warranty information about this product, please click here

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SIHOO M18 Ergonomic Office Chair for Big and Tall People Adjustable Headrest with 2D Armrest Lumbar Support and PU Wheels Swivel Tilt Function Black


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Important information

Safety Information

Hold Upto 330 pounds

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This Item
SIHOO M18 Ergonomic Office Chair for Big and Tall People Adjustable Headrest with 2D Armrest Lumbar Support and PU Wheels Swivel Tilt Function Black
SIHOO M18 Ergonomic Office Chair for Big and Tall People Adjustable Headrest with 2D Armrest Lumbar Support and PU Wheels Swivel Tilt Function Black
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Marsail Ergonomic Office Chair: Office Computer Desk Chair with High Back Mesh and Adjustable Lumbar Support Rolling Work Swivel Task Chairs with Wheel 3D Armrests and Headrest
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Price$159.99$239.95$319.99$229.99$149.99-27% $109.98
List:$149.99
Delivery
Get it Apr 9 - 11
Get it as soon as Thursday, Apr 10
Get it Apr 9 - 11
Get it Apr 9 - 14
Get it Apr 9 - 11
Get it as soon as Thursday, Apr 10
Customer Ratings
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material
style
max. recommended weight
weight
frame material
back style
seat depth

Customer reviews

4.4 out of 5 stars
12,887 global ratings

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Customers say

Customers find the office chair comfortable with a well-cushioned seat, and appreciate its exceptional build quality with firm materials. The chair is easy to assemble with clear instructions, offers good value for money, and provides generous lumbar support that forces proper posture. Customers praise its adjustable features, including adjustable arms and headrest for tall people, seat height, and tilt. While some customers find it excellent for "big and tall" folks, others mention it's not suitable for taller individuals.

AI-generated from the text of customer reviews

1,036 customers mention "Build quality"841 positive195 negative

Customers praise the chair's exceptional build quality, noting that it holds up well and has no issues with wear and air.

"...The seat cushion is a little thin, but it seems to be a quality memory foam gel like material and does feel soft even though I am on the bigger side..." Read more

"...All parts fit perfectly, were well made with above average fit and finish for the price range, and when assembled created a fine product of striking..." Read more

"...For the price I’d definitely this chair. It also supports a lot of weight which may be hard to find on some other relatively cheaper chairs...." Read more

"...I am happy with my purchase. Pros: * Sturdy Metal Construction where it is expected; Extra thick plastic where the plastic goes...." Read more

1,009 customers mention "Comfort"854 positive155 negative

Customers find the chair comfortable, particularly noting its well-cushioned seat and ergonomic design, with one customer mentioning it's soft enough to not cut off circulation.

"...It is comfortable, sturdy, well made, tilting mechanism, comfortable sitting cushion, comfortable arm rest, great lumbar support, and AMAZING..." Read more

"...but it seems to be a quality memory foam gel like material and does feel soft even though I am on the bigger side (6'3" and 290lb) -..." Read more

"...The seat is quite firm but not unduly uncomfortable, the back is very adjustable in lumbar support and the headrest is an added luxury as is the..." Read more

"...This chair is very comfortable and straightforward to put together. Nothing confusing. I love the reclining, it seems to be just right!..." Read more

586 customers mention "Ease of assembly"535 positive51 negative

Customers find the chair easy to assemble with clear instructions, and one customer mentions it's super easy to roll around on.

"...It takes around 30-45 minutes to assemble with the tools provided with the product. It has great head rest, lumbar, sitting support...." Read more

"...Extra screws and decent assembly hardware - Make sure you read the instructions and use the right size washer, I messed up because I didn't actually..." Read more

"...the inclusion of extra hardware just in case, and the detailed instructions for assembly...." Read more

"...The wheels are awesome, they’re super easy to roll around on! Armrests adjust for shorter/taller people. For the price I’d definitely this chair...." Read more

441 customers mention "Value for money"385 positive56 negative

Customers find the chair offers good value for money.

"...The small cons I listed aren't really much and at this chairs price point I don't think you will find a more comfortable." Read more

"...fit perfectly, were well made with above average fit and finish for the price range, and when assembled created a fine product of striking design..." Read more

"...warranty is a great bonus, making this chair feel like an excellent value for the cost. I am delighted with my purchase. Did I want a Herman Miller?..." Read more

"...Great value for the price!" Read more

425 customers mention "Back support"338 positive87 negative

Customers appreciate the chair's back support, noting its generous lumbar support option and how it forces them into good posture, with one customer mentioning it prevents back strain during long work sessions.

"...mechanism, comfortable sitting cushion, comfortable arm rest, great lumbar support, and AMAZING CUSTOMER SUPPORT!!" Read more

"...The only downside I’ve found is the headrest. It’s very supportive but quite hard if your head is anywhere BUT the middle." Read more

"...but I recommend this one to anyone looking for a comfortable and supportive chair for long hours of computer programming or any other work without..." Read more

"...*mesh back will enhance breathability; lumbar support is adequate (probably) for most people Neutrals/Cons: *..." Read more

384 customers mention "Adjustment capability"275 positive109 negative

Customers appreciate the chair's adjustability, particularly its adjustable headrest height and angle, lumbar support, and armrests that accommodate tall people.

"...Adjustable arm rests - if you haven't had them before, you'll like them. They take a lot of pressure off my arms. -..." Read more

"...All parts fit perfectly, were well made with above average fit and finish for the price range, and when assembled created a fine product of striking..." Read more

"...Armrests adjust for shorter/taller people. For the price I’d definitely this chair...." Read more

"...About a week ago or so, I started noticing the tilt adjustment knob was getting stuck and not actually doing anything to the tilting tension...." Read more

221 customers mention "Design"207 positive14 negative

Customers appreciate the chair's design, describing it as sleek and well-constructed, with a nice headrest and amazing color. One customer specifically mentions the large stylish knob on the back.

"...The lumbar support can be adjusted in or out via a large stylish knob on the back and has a large range of adjustment...." Read more

"...Also, the well designed parts and tools ensured there was little to no risk of hurting yourself...." Read more

"...The armrests go up and down, which is a great feature. The aluminum legs look great...." Read more

"...Overall, it was a step up from my last chair and the pink is very pretty, but if you roll around a lot maybe be wary of that issue." Read more

236 customers mention "Height"109 positive127 negative

Customers have mixed opinions about the chair's height, with some finding it perfect for their needs while others report it being several inches too short and not suitable for tall people.

"...is an indication that it is cheap, low-density foam and not sufficient for a larger body...." Read more

"...comprehensive - the headrest height and angle, armrest position, seat height, and tilt tension can all be customized for perfect ergonomics...." Read more

"...One was too small, one was too hard and back too short, and one was just right, which was this chair!!..." Read more

"Great christmas gift. Perfect for my son. Sturdy. Comfortable. Decent back and neck support. Looks good and fairly easy assembly." Read more

Great chair and customer service!
5 out of 5 stars
Great chair and customer service!
When the chair was delivered, the box it shipped in was extremely damaged and barely holding together with a lot of shipping tape. You could see where FedEx had dropped it on the corner (and maybe ran over the thing, who knows), it was majorly beat up. I took a few pictures of it and immediately started the return process even before I opened it, as I didn’t want them to tell me I couldn’t return the chair, if the box was opened. I sent Sihoo a message, including some of the pictures, and they responded in less than a day and even though it was most likely a FedEx issue, they worked with me and all is well now. Great customer service, and I have since put the chair together and it seems very sturdy and comfortable.
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Top reviews from the United States

  • Reviewed in the United States on January 12, 2025
    Color: BlackVerified Purchase
    I work approximately 10+ hours from home from Monday to Sunday depending on how crazy work gets. I needed a reliable chair and that is when I ran into ergonomic chairs and found the SIHOO M18 ergonomic chair after a crazy amount of days and hours or searching and reading reviews. Once I received the product and assembled it, I knew it was a good quality chair. It takes around 30-45 minutes to assemble with the tools provided with the product. It has great head rest, lumbar, sitting support. Bought it on October 2023 and provided everything I needed. About a week ago or so, I started noticing the tilt adjustment knob was getting stuck and not actually doing anything to the tilting tension. The back rest became wobbly. It was becoming a problem because I suffer from chronic neck and back pain and was the reason I had bought this product. Forgot to mention that it helped relieve my back and neck pain. I tried tightening the screws, disassembling and assembling the chair again, but nothing worked. My pain was getting worse and was affecting my work so I contacted the companies support group via email through amazon. I explained basically everything that I explained in this review and they requested some videos and pictures to see if they could find a solution. Those pictures and videos were sent. They replied and stated they would send me a new head rest, head rest mount, and new mechanism. I appreciated their quick reply and solution but I wanted to upgrade because I didnt want to experience the same pain again so I told them if I could get a discount to another SIHOO model, product models provided in email, for the same price amount of the replacement parts they were going to send me. They agreed after speaking to their supervisor!!!!! For me it was a surprise! I expected them to not care and just send me the parts they had mentioned. For the first time in my life, a company actually listened to its customer and found a solution that the customer needed! Plus, this was all solved from January 8 to January 12, 20205! They respond in such a quick manner, respectful, and professional! The products have a lifetime warranty and the company actually means it! I recommend the SIHOO M18 ergonomic chair for someone that wants to game comfortably or works in an office or from home at least 6-8hours a day. It is comfortable, sturdy, well made, tilting mechanism, comfortable sitting cushion, comfortable arm rest, great lumbar support, and AMAZING CUSTOMER SUPPORT!!
    20 people found this helpful
    Report
  • Reviewed in the United States on December 22, 2024
    Color: BlackVerified Purchase
    This is my first ergonomic mesh chair seat, I was originally replacing a walmart office chair i'd used for more years than I should have and got a "gaming" chair from a local big lots and found that the seat was too narrow (it was like 17" wide, I could squeeze in but after a couple hours I would feel sore in my thigh/hips. After checking reviews and doing some measurements I finally decided on going with this chair.

    Pros i've noticed
    - Adjustable lumbar support is nice to get the pressure I need where I want it.
    - Adjustable arm rests - if you haven't had them before, you'll like them. They take a lot of pressure off my arms.
    - Extra screws and decent assembly hardware - Make sure you read the instructions and use the right size washer, I messed up because I didn't actually read the steps and used the wrong washer lol
    - Can let the seat back a little and then lock it in place. (I like being leaned back but not too far, and this chair locks in just the right spot)
    - Arm rests can be moved out to the side if needed (the 3 screws go in a slot when you attach them so you can make the arm rests wider or tighter by loosening the screws and moving them)

    Cons
    - The seat cushion is a little thin, but it seems to be a quality memory foam gel like material and does feel soft even though I am on the bigger side (6'3" and 290lb)
    - The lumber support could go up another 1/2" but feels good where it is too.

    The small cons I listed aren't really much and at this chairs price point I don't think you will find a more comfortable.
    8 people found this helpful
    Report
  • Reviewed in the United States on February 22, 2022
    Color: BlackVerified Purchase
    After 15 years of heavy use my office chair finally gave up the ghost and became irreparable. After looking at a range of chairs in the $150 to $250 bracket and reading the reviews extensively, I settled on this model for it's good reviews and for the videos posted by it's buyers. What impressed me most was the care in packaging, the inclusion of extra hardware just in case, and the detailed instructions for assembly. All parts fit perfectly, were well made with above average fit and finish for the price range, and when assembled created a fine product of striking design and ingenious function. The seat is quite firm but not unduly uncomfortable, the back is very adjustable in lumbar support and the headrest is an added luxury as is the height adjustable armrests. My only complaint is the headrest does not go high enough to suit me, but that is a personal peeve. I happen to be taller than average. Most folks will find it useful and adaptable as it can rotate in closer to the head if desired. I like the fact that the height adjustment for the seat works differently than most. You don't lift up on the lever, but rotate it to change piston height. The same lever serves as a reclining lock to keep the chair back upright or allow for two reclining positions to be set for relaxed media viewing or even napping by simply pulling it out to free the action or pushed in to lock in one of three positions. The lumbar support can be adjusted in or out via a large stylish knob on the back and has a large range of adjustment. I can see this will be a long term reliable purchase.
    11 people found this helpful
    Report
  • Reviewed in the United States on February 9, 2025
    Color: BlackVerified Purchase
    Doing research on “best office chairs” everything made me think I needed to buy a Herman Miller or Steelcase ($1000+) chair in order to get a comfort. After hours of being overwhelmed I purchased 3 chairs on Amazon to test. This chair is very comfortable and straightforward to put together. Nothing confusing. I love the reclining, it seems to be just right! The wheels are awesome, they’re super easy to roll around on! Armrests adjust for shorter/taller people. For the price I’d definitely this chair. It also supports a lot of weight which may be hard to find on some other relatively cheaper chairs. Oh, and so far no squeaking!! The only downside I’ve found is the headrest. It’s very supportive but quite hard if your head is anywhere BUT the middle.
    3 people found this helpful
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Top reviews from other countries

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  • Sebastian
    4.0 out of 5 stars Much better than any gaming chair.
    Reviewed in Sweden on December 9, 2024
    Before buying this I hade a racing style gaming chair which are awful and this feels much better for my lower back, the adjustable back and head rest are a big hard tho but you get used to it
  • Mario Sergio Monteiro
    5.0 out of 5 stars Mi trovo bene 🫠😜
    Reviewed in Italy on November 26, 2024
    The media could not be loaded.
    Semplice e utile! Dopo aver provato un paio mi sono trovato bene con questa!
    C’è l’ho da un anno e non ho avuto problemi.
    Non é una top di gamma ma molto robusta e comoda.
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  • Willsypops2477
    5.0 out of 5 stars Superb!
    Reviewed in the United Kingdom on December 19, 2024
    Absolutely superb chair!
    Bought as a gaming chair for my Teenager and he's very happy with it!
    Assembled in 20 minutes from clear, concise instructions. Extremely comfortable with various options for adjusting it to suit you plus moves easily and smoothly. Looks great and superb value for money. Would definitely recommend.
  • Taif☆
    5.0 out of 5 stars مريح
    Reviewed in Saudi Arabia on February 13, 2025
    Color: Light BlueVerified Purchase
    المقعد مريح ووسيع نوعا ما
    مسند اليد جلد قاسي حسبته بلاستيك بالاول لكنه مريح يرتفع وينزل لكن ما تقدر تلفه او تقدمه
    مسندر الرقبه طويل بالنسبه لي بيكون اكث راح لشخص اطول مني (158cm)
  • Doodi N A
    5.0 out of 5 stars ممتاز
    Reviewed in Saudi Arabia on November 9, 2024
    Color: Light PinkVerified Purchase
    ثقيل الوزن وثابت، قاعدته من المعدن، مريح للظهر،سهل التركيب

    أشباهه منتشرة على منصة أمازون ولكن ليس بنفس الجودة ، اضطررت لارجاع اثنين قبله، نفس الشكل ولكن خفيف الوزن والقاعدة بلاستك.