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ProtoArc

ProtoArc EC200 Ergonomic Office Chair – High-Back Mesh Computer Chair with Lumbar Support, Adjustable Seat Depth & 3D Headrest Ergo Desk Chairs for Work from Home, 8+ Hours Comfort – Black

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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Jul 23
Order within 12 hours and 51 minutes
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Color: Black


Features

  • Size & Weight Advisory: Our ergonomic chair is optimized for users 5'4" 6'0" tall and up to 220 lbs. Please check your measurements before ordering. If you're outside this recommended range or experience any fit/comfort issues, contact our support team we're here to help
  • Ergonomic Design for Home Office: The EC200 combines a breathable mesh back with a high-density foam seat balance of airflow and cushioning. Features adjustable lumbar, seat depth, backrest, height, headrest, and armrests to fit users 5'4"6'0" under 220 lbs. Your health-focused productivity partner for working from home
  • 2-Way Adjustable Lumbar Support: Features 4-direction adjustment (2.36 height + 0.8 depth), the ergonomic desk chair contours to your spine and eliminate the empty back feeling. High-strength mesh reduces lower back strain by up to 50% better posture, focused & relaxed
  • Safety & Durability Tested: Meets BS EN 1335 and BIFMA X5.1 standards. Features a TUV Rheinlandtested Class 4 gas lift (EN 16955) for smooth,ensuring smooth, stable height adjustment and reliable performance
  • Customizable Seat Depth Protect Your Thighs: 5-position sliding seat with instant lock adapts to your leg length. Perfect for coders, designers, and writers who sit 8+ hours and suffer from thigh pressure or dangling legs. Optimizes back support and relieves leg tension
  • Better Support Seat Cushion Built to Last: 55-density highresiliency foam resists sagging for years. Slightly firm on purpose because soft cushions collapse. Ideal for those who find pure mesh too hard. Breathable top layer + supportive core = comfort without numbness
  • 4 Tilts Back Angles: Adapt to your changing focus through out the day with the 4-level backrest tilts. 90 (work), 105 (reading), 120 (calls), 130 (relax). The mesh computer chair also has a tilt tension knob to adjust reclining resistance to your preference
  • Multi-Dimensional Headrest: 3D dualaxis headrest (height, depth, rotation) cradles your neck naturally. For adjustment questions, contact our support
  • Easy Assembly & Wellness Focused: 20min assembly with included tools and visual guide. We are committed to your wellness, offering a workspace solution that blends modern aesthetics with functional health benefits. For any inquiries, our ProtoArc Support Team is ready to assist you

Description

Mission At ProtoArc, our mission is to deliver innovative workspace solutions that enhance comfort, boost productivity, and foster overall wellness. Vision We believe that everyone deserves a workspace that not only meets their functional needs but also empowers them to thrive. Our vision is a world where work environments promote health, happiness, and high performance. For home office workers, remote professionals, and anyone spending 8+ hours at a desk, the EC200 delivers personalized comfort. Whether you‘re in your study, living room, or hybrid workspace, its adjustable lumbar, headrest, seat depth, recline adapt to your body – keeping you productive and focused For remote analysts or programmers sitting 8+ hours. Adjustable lumbar + seat depth keep you supported – even in a compact workstation. Perfect for writers, designers, and freelancers. Helight & depth adjustable lumbar and 3D headrest adjust to your body, so you can focus for hours without leaving the room. Ideal for spouses, parents, or grads working from home. Easy assembly, and ergonomic support they'll feel every day. For couples or roommates sharing a tight workspace. Easy‑to‑adjust lumbar & seat depth let each user find their ideal position in seconds. Transform any chair into a comfort throne. Perfect for office chairs, dining chairs, or car seats Need even stronger support for your office chair? Add our lumbar support pillow. The perfect upgrade for ultimate sitting comfort The EC200 brings tailored lumbar support, adjustable seat depth, and a breathable mesh back to your home office. Experience the difference of ergonomic design – less fatigue, better posture, and all‑day comfort. Is the seat cushion too hard or too soft? Comfort perception varies by body type. We recommend for users under 220 lbs for the best feel. If you need personalized accessory upgrades, we're here to help you sit right. What if the chair doesn't fit my size? Our desk chair fits height 5'4"–6'0" AND weight 90–220 lbs (both met). Outside this range may not fit well. Please check your size before ordering. Will the chair wobble? The computer chair is built with solid materials and loved by 90%+ users.If wobbling occurs, please check whether all adjustments are properly locked, or if your body size fits our recommended range. Can I adjust the seat depth for different leg lengths? Yes, 5‑step seat depth adjustment (1.97” range) provides proper thigh support for any leg length. Is the headrest difficult to install? No, we provide clear step‑by‑step instructions. If you still have questions, please reach out to us – we're always ready to help. EC200 EC300 Flexer Flexer Pro SC Butterfly Seat Cushion Extra Large Seat Cushion Lumbar Support Pillow

Brand: ProtoArc


Color: Black


Material: Mesh, Nylon


Product Dimensions: 20"D x 21.26"W x 44.5"H


Size: Medium


Brand Name: ProtoArc


Additional Features: Adjustable Backrest, Adjustable Headrest, Adjustable Lumbar, Big and Tall, Ergonomic


Unit Count: 1.0 Count


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


Manufacturer Warranty Description: 3 years.


Set Name: EC200


Manufacturer Part Number: EC200


Material Type: Mesh, Nylon


Frame Material Type: Nylon


Seat Material: Foam


Fill Material: Foam


Upholstery Fabric Type: Mesh


Maximum Weight Recommendation: 220 Pounds


Assembly Instructions Description: Install the five-star base, armrest, tilt mechanism, seat cushion and backrest with screws. Then insert the five-star base and headrest.


Required Assembly: Yes


Color: Black


Back Style: Mesh Back


Style Name: Modern


Pattern: Solid


Theme: Office


Shape: L-Shape


Arm Style: with-arms


Leg Style: wheels


Form Factor: Desk Chair


Item Dimensions D x W x H: 20"D x 21.26"W x 44.5"H


Size: Medium


Item Weight: 18.14 Kilograms


Seat Back Interior Height: 22.5 Inches


Seat Height: 13 Inches


Seat Depth: 20 inches


Seat Length: 21.26 Inches


Item Dimensions: 20.08 x 21.26 x 12.99 inches


Item Depth: 20 inches


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, Jul 23

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.

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Similar Products

Top Amazon Reviews

    • Highly recommended, excellent comfort, quality, value and customer service!
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. ... show more
Reviewed in the United States on November 4, 2025 by Anony Mouse
    • More than just a Good budget chair
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. ... show more
Reviewed in the United States on February 19, 2026 by Peter fricano
    • Crazy good value, one comfort caveat
For this price I can't imagine finding a better general office chair. It has adjustable (height) arm rests, lumbar support, head rest, and seat depth, which combined are hard to find even in chairs costing $100 more than this. Now, for some people it won't be perfect. If you're looking for a lounge chair with thick cushions and padding this certainly isn't that. It's a classic office chair, comfortable and ergonomic, so if you want one of those "executive" chairs you sink into with the thick padding then look elsewhere. My one complaint though is that despite all of the features, despite everything you can adjust, the lumbar support overall is pretty uncomfortable. No matter how I sat for the first week - proper posture, slouched, leaning forward - nothing ever felt comfortable whether I had it on the lowest or highest setting. Always it felt like there was a rock being pushed into some part of my back. I looked around and found that the company apparently doesn't support taking the lumbar support off entirely, which makes it very obnoxious to do so if you want to. That being said, you can remove the lumbar support brace, it's just not a fun experience because you have about a 1-2" gap to get an angled ratchet screwdriver in behind the mesh (careful not to rip it), lined up with the screw hole, and then to loosen it enough that the slide can be removed. Even with the smallest ratchet screwdriver and bit I could find, and with experience working in tight spaces on equipment repairs, it was such a pain that I removed a single screw and then refused to do any more, so the padding just sort-of dangles off the back of the chair now. But wow, it's so much more comfortable without that "support". ... show more
Reviewed in the United States on June 25, 2026 by Dominic Stroh
    • Best chair under $300?
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 ... show more
Reviewed in the United States on October 1, 2025 by Real Rap Fan
    • Pretty good!
It’s been great for the money so far! It’s decently comfortable, but after many hours gaming or watching youtube, I definitely have some discomfort BUT for the price nothing has really came as close to great as this chair has to me. Ergo settings work well, feels sturdy and putting it together was pretty solid too If mine broke, I would buy it again. ... show more
Reviewed in the United States on April 4, 2026 by logan
    • Yes! Finally!
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. ... show more
Reviewed in the United States on March 7, 2026 by Awais Chaudhary
    • Bad Lumbar support & Uncomfortable seat.
I wanted to like this chair, but the lumbar support feels awkward, and the seat is too firm for my liking. It’s more soft in the front of the seat, but hard where you actually sit. I can’t sit in it for more than an hour without pain. Build quality seems decent though. The seat can adjust forward if needed, which helps taller people. The unlocked reclining is fine, but the Lock steps aren’t in great spots, the first one after upright is too far back in my opinion. The mesh feels great, and the headrest is very comfortable. The chair also smelled of chemicals when I opened the box. ... show more
Reviewed in the United States on April 21, 2026 by Alex
    • Good chair for the price!
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. ... show more
Reviewed in the United States on April 2, 2026 by Joshua Hu

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