SIHOO M57 Ergonomic Mesh Office Chair, High Back Home Desk Chair with 3D Armrests, Lumbar Support and Adjustable Headrest, Comfortable Computer Chair, Big & Tall Office Chair Hold 330 LBS-Light Grey
Condition: New
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Extended holiday returns
Returnable until Jan 31, 2026 Learn more
Returnable until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026
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Availability:
Only 10 left in stock, order soon!
Arrives
Dec 12 – Dec 16
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Color: Light Grey
Style: Modern
Features
- ADJUSTS TO YOU, FROM BOTTOM TO TOP - Whether you're working, gaming, or just relaxing, SIHOO ergonomic chair adapts to your needs. The headrest tilts and lifts to support your neck just right. The lumbar support shifts in height and depth to fit the curve of your lower back. Recline from 90 to 126 to change posture throughout the day. With smooth height lift and 360 swivel, you move freely and stay comfortablehowever you sit.
- ERGONOMIC SUPPORT WHERE YOU NEED IT MOST - Recommended by the Ergonomics Application Association, the SIHOO ergonomic office chair is shaped to match the natural curve of your spine. The split backrest cushions your back and helps relieve pressure along the spine. The waterfall-edge seat supports your thighs while improving circulation, keeping you comfortable through long hours at your desk.
- STABLE, DURABLE, AND QUIET - Built with a reinforced aluminum base and a dual-frame backrest, our desk chair holds up to 330 lbs with ease, staying sturdy and supportive even with daily use. Smooth-rolling, silent casters glide across the floor without noise or scratchesperfect for quiet workspaces.
- CERTIFIED SAFETY YOU CAN TRUST - Every key part of the SIHOO chair has undergone over 100,000 rigorous safety tests and is certified by BIFMA and SGS. Built with your safety in mind, it offers the confidence to sit, recline, and move freelyknowing your chair is tested, trusted, and made to last, perfect for long workdays, gaming sessions, or everyday comfort at home.
- WARRANTY & SUPPORT YOU CAN COUNT ON - Every SIHOO office chair comes with a 3-year warranty and easy 30-day returns. If anything goes wrong, just contact our customer servicewell reply within 24 hours and send free replacement parts if needed. Your comfort and satisfaction are our top priorities.Your comfort and satisfaction are our top priorities.
Brand: SIHOO
Color: Light Grey
Product Dimensions: 30.31"D x 25.59"W x 13.59"H
Size: Oversized
Back Style: High Back
Brand: SIHOO
Color: Light Grey
Product Dimensions: 30.31"D x 25.59"W x 13.59"H
Size: Oversized
Back Style: High Back
Special Feature: Adjustable Lumbar
Product Care Instructions: Wipe Clean
Unit Count: 1.0 Count
Recommended Uses For Product: Office
Maximum Weight Recommendation: 330 Pounds
Style: Modern
Pattern: Solid
Finish Type: Powder Coated
Room Type: Office
Age Range (Description): Adult
Included Components: Arm Pad, Caster, Cushion
Shape: L-Shape
Model Name: M57-M114
Arm Style: With arms
Surface Recommendation: Hard Floor
Furniture base movement: Swivel
Indoor/Outdoor Usage: Indoor
Furniture Finish: Aluminum
Seat Height: 55 Centimeters
Seat Depth: 18.11 inches
Fill Material: Polystyrene
Cushion Style: Boxed Edge
Leg Style: Tapered Leg
Arm Height: 30.31 Inches
Reclining Position Count: 3
Tilting: Yes
Is Customizable: Yes
Is Foldable: Yes
Chair Backrest Width: 20.8 Inches
UPC: 199284151277
Form Factor: 360,Ergonomic,Tilt
Manufacturer: SIHOO
Assembly Instructions Description: Assembly required, instructions provided
Item Weight: 36.3 pounds
Item model number: M102C
Material Type: Mesh
Manufacturer Part Number: M102C
Date First Available: March 12, 2018
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Dec 12 – Dec 16
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: Black
Style: Modern
Just got this chair today, assembly is very easy and the parts are very robust, most of this chair feels high quality except the plastic paddle on the lever that adjusts the height and locks & unlocks the reclining function and the headrest attaches to the back of the chair. That part is a bit cheap feeling but as long as you don't have someone jokingly pull the chair back by the headrest it shouldn't be a problem, but if some joker wants to pull on it to scare you, it could break eventually. As to the long term comfort, right now I can not attest to that yet. But what I can tell you is that this chair is not meant for very wide people with a very large rear-ends. The chair is narrow, I am a small guy 5'5" 150lbs and this chair is just the right size for me. THE HEADREST at its lowest setting and tilted all the way back is just the right place for it to rest just under the back of my skull and just above me shoulders just they way those U shaped travel neck pillows rest around you neck to give the back of your neck support when you are traveling. So if you are shorter, it wont rest there most likely. That's where I like it to be but you may differ, but what I can tell you is that if you don't rest it there it will force your head forward because it doesn't move back any farther, which I don't like. THE LUMBAR SUPPORT is okay, this chair allows you the screw it in as far as you like and for me its in the right place, but as far as it goes I've never had a chair with this so it takes some getting used to, but you an just unscrew it so you cant feel it, but I want to be in a proper ergo so I will just get used to it. THE ADJUSTABLE HEIGHT is good for me as a short guy many office chairs don't adjust low enough, and even though I can put my feet flat on the ground for most of them, the weight of the backs of my legs are entirely being held by the chairs seat instead of letting me reduce pressure on the back of my legs with my feet allowing my knees to be at an 80 degree angle instead of a hard 90 degree angle putting unneeded pressure on my hamstrings. I am using it while writing this review and it is currently at the lowest setting and it is perfect for me, so if you are shorter then me take that into account. As well be careful with the lever that adjusts the height because it is one of the only things that I can see breaking if you are not mindful. THE BACK REST is very comfortable because for me at least it has a high back and is just broad enough in the shoulders and for a small guy I have broad shoulders. I have a different mesh chair with a short back and the metal frame that holds the mesh on that chair constantly digs into my back and I cant bare sitting in it for very long but it was free so beggars cant be choosers. There is nothing able to do that on this chair for my body size and I appreciate that very much. THE SEAT is fully mesh with a cushion under the knees and seems to be comfortable as of right now, as I said long term comfort is still to be decided. But at first feel, I can say as long as you keep your legs facing forward I don't foresee a problem. But when I decided to buy a fully mesh chair I realized one of my favorite ways to sit will no longer be possible. I like to Spread my legs and have my right leg off the side of the chair instead of the front. With mesh chairs, because of their nature, they are elevated on the sides similar to a bucket seat chair, but there are no cushions so it will surely cut off circulation so this is a no go. This is something I knew going into this purchase and decided it was worth a try and I can just get used to it. Another position I like is to sit in my chair cross legged. This is still possible but not the most comfortable because the bucket shape isn't as comfortable for my feet. The comfort of the seat is probably the most important part of this chair for me. I will be sitting in it every day for very long periods of time and I need something that wont fatigue my butt, tailbone and the back of my legs, if this mesh seat creates pressure points and I begin to get sore, I will try and update this review, and I will probably return the chair and look for a regular cushion chair or buy the regular cushion style of this chair because they make one with a plush cushion as well. Hope this cleared something up for some of you.
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Reviewed in the United States on November 13, 2020 by PeepoHappy
Color: Black
Style: Modern
I heard about these types of chairs from a friend but was sceptical about them given the design looks cheap on most of these chairs. You would think the fabric wouldn't hold much weight, the lumbar support might be useless, and with all this plastic theres no way this chair is sturdy. If you thought any of that yourself take a moment to read all of this review. (Before I begin I chose this brand because it had some of the best reviews, build quality and price I could find online, and I research all my options for weeks, this was the best deal I could find.) I will just start my review with the day I recieved this chair because there was no issues with shipping and all went well there. So I received the chair in a box that looked like it was attacked by an angry rhino, it was beat up and had small holes to even giant holes, my first thought was well the chair is ruined. Luckly this company thought ahead and prepared this chair to be shipped from even the worst of lazy shippers because the chair was spotless and in perfect condition. They had this chair wrapped up in some of the nicest bubble wrap, plastic, and foam you can find, so this chair was completely protected. I slowly removed all the chair parts, tools, and to my surprise a nice pair of gloves to use if I wanted to. I followed the instructions and with little effort was able to build the chair in 15 minutes, very good instructions. I inspected the chair while putting it together and found that everything was well made and polished properly, no tiny dents, scratches or other imperfections. To say the least I was very satisfied with the effort they put to protect the chair during shipment. After all was together I tried it out and was almost immediately in love. This chair despite being made of mostly thin mesh and plastic was very sturdy and comfortable, and I weigh almost 300 pounds. I have been using this chair mainly while gaming for hours and love it. I never get hot or sore from this chair and the lumbar support and headrest keep my back completely straight removing the worry of hurting my back anymore. The lumbar support is adjustable up and down and back and foward but you have to to pull it hard up and push it hard back down but this is just to keeps it sturdy. I have had this chair for almost 2 months now and have no complaints. There is no creeking or strange noises at all and I never feel like the chair going to give way and fall apart. I highly recommend this chair to anyone who spends a lot of time in chair for work, gaming or any other activity that are better done sitting in a comfortable chair. As of right now I have zero complaints and if any come up I will update this review. If you read this review and are still worried, take your time and think of your unique situation and do what is best for you, but my recommendation is go ahead and pick this chair up if your looking for a chair like this and experience the comfort of this chair and the piece of mind that you know this chair will help prevent or, in my case, help improve back problems. I can honestly say this chair helped me keep my back from getting worse and I have less back pains now that I use this chair, it's no cure but it helps.
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Reviewed in the United States on November 24, 2018 by Trystan D Shaw
Color: Grey
Style: Modern
I have had this chair since 2022. It is comfortable with adequate adjustments for computer work. The only flaw I have encountered is with the arm rests. I have bad knees and I depend on the arm rests to help me get out of the chair. The arm rests are essentially a metal plate covered with foam. Because the foam exceeds the length of the supporting plate at the front, my constant pressure on this area while standing up caused the foam to break along the line of the plate. I used Gorilla glue to mend it but the line is still visible. This happened to both arm rests. I have learned to put my wight further back on the arm rests when standing up.
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Reviewed in the United States on November 1, 2025 by Herff Kendall Herff Kendall
Color: Black
Style: Modern
I picked this up on Prime Day, and after putting it together and using it for a day, I feel like I stole it. First of all, the assembly was simple. Having assembled a couple gaming chairs for my kids, I was expecting to invest 75-90 minutes to put this together. It took 30 minutes and only that long because I was being deliberately cautious. The assembly could almost be done by one person. I was good right up to the point where the back rest attaches to the base before getting my kid to help me. I probably could’ve done it alone, but the chair is a bit heavy and at this step, you’d have to hold two pretty beefy pieces of the chair together while threading screws into place. Aside from that one step, it would’ve been a simple one-person job. It comes with well-marked hardware, a nice Allen key with a handle, and even a pair of lightweight gloves, which I chuckled at. Once put together, it is very solid and comfortable. After just one day of use, my back is already happier. This chair is a bargain and I highly recommend it.
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Reviewed in the United States on July 24, 2024 by FWAChris