ProtoArc Ergonomic Office Chair – EC200 High-Back Mesh Computer Chair with Lumbar Support, 3D Adjustable Headrest & Sliding Seat for 8+ Hour Comfort, Big & Tall Home Office Desk Chairs - Black
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Availability:
In Stock.
Arrives
Thursday, May 28
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Color: Black
Features
- Ergonomic Design, Healthy Office Work: Designed for modern professionals, the EC200 ergonomic chair combines comfort and health with adjustable lumbar support, seat depth, backrest, seat height, multi-dimensional headrest, and large armrests, serve people from 5'4" to 6'3" (Capacity up to 280 lbs). Tested for 8+ hour comfort, this chair actively supports posture whether working from home or office. More than just seating - it's your health-focused productivity partner
- 2-Way Adjustable Lumbar Support: Features 4-diretion lumbar adjustment (2.36" height + 0.8" depth customization), the computer desk chair contours to your spine's natural curve. High-strength mesh back distributes pressure evenly, reducing lower back strain by up to 50%. Ideal for those who spend long hours at a desk, it promotes better posture while keeping you focused and relaxed
- Tested for Safety and Durability: At ProtoArc, all of our chairs meet BS EN 1335 ergonomic requirements and have been tested by SGS according to ANSI/BIFMA X5.1 for key strength and stability.They feature a TUV Rheinlandtested Class 4 gas lift (EN 16955) for smooth,ensuring smooth, stable height adjustment and reliable performance for everyday and long-term use
- Better Support Seat Cushion: Designed with a high-resiliency foam cushion at 55 density, the office chair seat strikes the perfect balance between comfort and support. Enhanced pressure distribution design provides targeted support for the sitting bones and relieves sacral pressure. The reinforced base prevents sagging, making it suitable for users weight up to 280lbs. Enjoy hours of comfortable seating without the dreaded office chair syndrome
- Customizable Seat Depth: The sliding seat allows personalized seat depth in 5 positions with instant-lock mechanism adapts to your leg length. By optimizing the sitting area, the computer chair maintain proper back support and release legs pressure - whether you're taller and shorter users
Brand: ProtoArc
Color: Black
Material: Mesh, Nylon
Product Dimensions: 20"D x 21.26"W x 44.5"H
Size: Medium
Brand Name: ProtoArc
Recommended Uses For Product: Home, Office, Studio
Room Type: Bedroom, Living Room, Office, Office Reception, Study Room
Age Range Description: Adult
Included Components: Office chair main parts
Model Name: EC200
Surface Recommendation: Hard Floor
Indoor Outdoor Usage: Indoor
Model Number: EC200
Manufacturer: ProtoArc
Unit Count: 1.0 Count
Manufacturer Warranty Description: 3 years.
Material Type: Mesh, Nylon
Frame Material Type: Nylon
Seat Material: Foam
Fill Material: Foam
Required Assembly: Yes
Maximum Weight Recommendation: 280 Pounds
Color: Black
Back Style: Solid Back
Style Name: Modern
Pattern: Solid
Theme: Office
Shape: L-Shape
Arm Style: with-arms
Leg Style: wheels
Item Dimensions D x W x H: 20"D x 21.26"W x 44.5"H
Size: Medium
Item Weight: 18.14 Kilograms
Item Depth: 20 inches
Item Dimensions: 20.08 x 21.26 x 12.99 inches
Seat Back Interior Height: 22.5 Inches
Seat Height: 13 Inches
Seat Depth: 20 inches
Seat Length: 21.26 Inches
Additional Features: Adjustable Backrest, Adjustable Headrest, Adjustable Lumbar, Big and Tall, Ergonomic
Furniture Base Movement: Swivel
Reclining Position Count: 4 Position
Tilting: Yes
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, May 28
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
I am very impressed by the chair and the company. Exceptional value, probably the best chair under $150 (on sale) First about the company. It is not common nowadays to have a company that has superb customer service. ProtoArc was very prompt and responsive to my request (see bellow) Next the chair itself. I purchased about half a dozen chairs during the recent Amazon discount day, since I have a bad back which is very sensitive to my posture and my sitting position. Each one of these chairs, with the exception of ProtoArc, was a "standard" CCC (Cheap Chinese Crap). cheap quality, cheap packaging, difficult to understand instructions, lacking in quality control. one chair had a tiny sphere of steel ("weld splatter") that got stuck inside the thread and I could not even screw the bolt. Another chair had a damaged part. yet another had very soft steel bolts that were easily stripped. none was comfortable for me. some made my back sore after a few minutes. The ProtoArc was the heaviest chair by far, indicating thicker materials The packaging was the nicest, high quality box, not just plain cardboard, each and every part was packaged in an individual clearly labeled bag made of non-woven fabric or in its own box, protecting the parts (unlike cheap nylon bags that offer no protection). It seems that a lot of care and thoughtfulness went into the packaging. In this case you can judge the chair by the cover, and the weight... Very thoughtful packaging and very clear labeling of the bolts and the tool, easy to understand and follow instructions. Build quality was perfect, no issue with any of the parts, everything fit perfectly, faster and easier to build than the others. Once built, it is very sturdy and solid. One of the other chairs, the plastic parts were so soft that the bolt deformed the plastic and worked itself into the hole (I kept tightening but felt very little resistance). whereas the ProtoArc plastic was much more solid and dense (heavier), and the bolts were the proper size head to prevent them from deforming the plastic part. Lastly, and most importantly, the ProtoArc was the most comfortable chair out of all the ones I tried, including much more expensive ones. (fyi I am 6ft even, 170lb, fairly skinny) It has all the right adjustments: The tension of the reclining back is adjustable, whereas some others did not have a way to adjust the tension on the back, and I kept falling backwards when I leaned on the back. The ProtoArc has an adjustment for the seat depth (I have long legs/thighs). The headrest has plenty of adjustments, and a very smart ratched like mechanism, it does not move backward, unless you pull it all the way and then it unlocks the ratchet mechanism. Armrest have only has height adjustment, but you can adjust the position when you build it because of elongated slots instead of a circular hole. The widest position of the armrest was perfect, the armrest padding is nice and thick. one chair had no adjustments for the armrest, and another chair that had front/back and swivel adjustments but the mechanism was so flimsy that the armrest kept moving and swiveling which was very annoying. The only minor issue for me was that the seat bottom was a bit too firm for my skinny old butt... several reviews mention the firm seat bottom, so I guess that it is not only my butt, yet one person found the foam too soft? ProtoArc offers a free lumbar pillow if you need one for this chair, but not a seat cushion. I contacted them, and they promptly sent me the seat cushion, a $55 value! I will not hesitate to purchase any other product from this company.
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Reviewed in the United States on November 4, 2025 by Anony Mouse
Color: Black
Thoughts Day 1: Great chair! adjustable tilt, lock, and back support. comfortable. simple, modern design. Im all about minimalism. decent material quality. everything seems balanced and well put. easy assembly, should take no more than 30 minutes. spent months looking for a proper chair. went through 3, either returned or gave away. this has made the best first impression. will update review if anything changes.
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Reviewed in the United States on March 7, 2026 by Awais Chaudhary
Color: Black
So far this chair has been amazing especially for the price. It took about 40 minutes to put together, very straight forward and the included Alen key that isn't one is really nice if you don't have a socket or drill. I like the adjustable lumbar feels like It really is supporting as well as the adjustable seat depth I'm not hanging off the back. This chair compared to other chairs like racing or gaming is just miles better. the seat is large so you can spread your legs out without something digging in your side. fairly good build quality strong screws I like the extra few that you get just in case. The packaging was almost overly nice almost something you would get for a high end laptop. It looks really nice blends in there is no white at least here but for me that was a non issue. the only downside is no leg rest but that's it everything else is perfect. If you have a gaming chair just switch to this huge mistake buying those.
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Reviewed in the United States on February 19, 2026 by Peter fricano
Color: Black
I took a gamble after coming across good reviews for the EC100. I bought this with my own money and one of the first to post an actual none paid opinion. At first glance I knew it was something special. The packaging is superb and expensive. Including black button bags for everything and lots of foam I'm 6'2 175lbs. The chair overall is very good and comfy but I do have a few small issues. No matter the seat adjustment I'm always sitting on the last 2inchs of the cushion. And it's hard and uncomfortable. I have to use an aftermarket seat cushion to add more length in the back Second issue is the arm rest while very large, and soft which is great. They are to far forward. My arms are at my side when I sit naturally. These sit way out past the back mesh. This leads to hunching over. Also wish they rotate but for what I paid that's OK. Just fix them being way to far forward Overall great construction, strong build quality, 5 year no worries warranty. And comfortable after a few adjustments (mostly adding length to rear of seat). The adjustable seat, headrest and lumbar are VERY Good. Probably best chair under $300. I returned a Lazy Boy Joel to staples cause this chair destroys it and was much cheaper
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Reviewed in the United States on October 1, 2025 by Real Rap Fan
Color: Black
Pros: - tall backrest, i have a tall back so the backrest was a good height for me - easy to assemble - nice (usable!!!!) headrest - affordable! - big soft cushion - comfortable!! (only after removing lumbar support, see cons for more info) Cons: - lumbar support is too aggressive, even at lowest setting, had to destructively remove it, recommend protoarc to make the lumbar removable by default without ripping it out. - armrest is good for me, but its not adjustable at all except for height, so might not be a good match for others - cushion gets hot, but im also a warm person so maybe good for others - cushion is big and supportive, but could be a little firm for people after sitting for a few hours (why sit for that long anyways) This is very excellent for the price though, definitely consider this if you don't want to shell out 1000 bucks for a herman miller or something.
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Reviewed in the United States on April 2, 2026 by Joshua Hu