ProtoArc Ergonomic Office Chair: Comfort for All
$189.00
Price: $189.00
(as of Jul 03, 2025 06:07:40 UTC – Details)
Description
Experience superior comfort with the ProtoArc EC100 Ergonomic Office Chair. Designed for big and tall users, its S-shaped dual-back and adaptive lumbar support reduce strain during long workdays. The standout feature is the patented spring cushion—30% thicker and saddle-shaped to evenly distribute pressure for all-day comfort. With an adjustable headrest, 2D armrests, and a two-mode locking tilt, it adapts to your needs. This mesh computer chair provides a spacious, supportive seating experience, making it a fantastic choice for any home or office setup where wellness and productivity are paramount.
Product Details
- Model: EC100
- Color: Gray
- Special Feature: S-shaped Dual-Back, Adaptive Lumbar Support, 360° Spring Cushion
- Recommended Weight: 90-280 lbs
- Recommended Height: 5.3 ft – 6.5 ft
- Adjustments: 60° rotating headrest (2.75″ height), 2D armrests (3.5″ vertical), 90°-130° locking tilt, 3.9″ seat height adjustment
- Cushion: 30% thicker saddle-shaped cushion with 20 internal springs
- Material: Breathable Mesh Back, High-Density Spring Cushion
Advantages
The standout advantage of the EC100 is its patented 360° Even Pressure Spring Cushion. This saddle-shaped, extra-thick cushion effectively disperses hip pressure, guaranteeing comfort during long periods of sitting. The S-shaped dual-back and adaptive lumbar support work in tandem to reduce lower back pressure by up to 50%, moving with your body to provide constant support. Designed for a wide range of body types, its generous sizing ensures a spacious and unrestricted seating experience for big and tall users.
Our Recommendations
This chair is highly recommended for individuals between 5'3″ and 6'5″ and weighing up to 280 lbs who spend long hours at a desk and prioritize lumbar support and seat comfort over extensive manual adjustability. It's an excellent choice for a home office or professional workspace where sustained focus is key. Take advantage of the 90° and 130° tilt-lock modes to seamlessly switch between focused work and relaxation.
Conclusion
The ProtoArc EC100 is a strong contender in the ergonomic office chair market, especially for big and tall users. Its major selling point is the exceptionally comfortable and innovative spring cushion, which delivers on its promise of all-day support. While the lack of manual lumbar adjustment might be a dealbreaker for those who prefer precise control, the chair’s overall build quality, ease of assembly, and adaptive support are impressive. If you prioritize superior seat comfort and reliable back support in a generously sized chair, the EC100 offers excellent value.
13 reviews for ProtoArc Ergonomic Office Chair: Comfort for All
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oh-please –
Very comfortable and sturdy PC or desk chair at a remarkable price
Very well designed and built, heavy-weight (good) construction, also with EXCELLENT assembly instructions. (The two of us did it in about 30 minutes). Extremely comfortable. The only quibble — we wish the seat bottom could be tilted, as the fixed “stock” position is slightly too tilted towards the front. Superb back support, great arm-rests . . . and over all very high quality, especially for its price.
Patty Turknett –
Adjustable arms are easy to use
Very easy to put together! I’m able to adjust the arms to match my desk. It works for me
P. Zedeck –
First Impressions – not bad!
BLUF: For the price this is a good value. I’m writing this review on day one of using this chair. These are my first impressions. Assembly was okay. I recommend using the box the chair came in to help act as a jig to help with assembly. I should have watched the assembly video instead of relying only on the documentation. The documentation is okay and the parts are well labeled.The included hex driver is very good and one of the best and exceeded my expectations for this price range. This is an important detail because all too often OEMs include a crappy hex driver which makes assembly unpleasant.As for comfort. It’s only day one but in my experience when you first sit in a chair you know if it’s going to be good or bad. And with a little adjustment this chair is making my back happy. I have bad back issues and sitting in this chair I can feel my back feeling better.The lumbar support for my body seems to be working. The main cushion feels supportive.So overall for the price point: not bad! I would recommend this if your looking for a lower price chair. However at this price don’t expect too much in the way of tailored adjustments. I also recommend upgrading the castors.
Camden R –
great for bigger people!
Best Chair i’ve had at my desk for a while, as a large 6 foot individual it is very comfortable! – Easy to put together, takes about an hour / 2 hours
Sound Theory –
Nice seat cushion, but not as comfortable as I had hoped.
I watched a video review that I swore was the same product, but it appears to just look identical. You can’t lock the mechanism for the back, you can only have it locked straight up, or unlock it and just lean back, and it takes effort to push it backwards. (Like a rocking chair) The piece that goes behind your lower back was uncomfortable, I ended up removing it and putting a small blanket there instead so my back doesn’t touch the plastic. Also you can’t rotate the arm rests, which was disappointing. The seat cushion is nice, though. Not exactly the product I hoped for, but it’s better than the broken chair I was using.
Bruce Crutcher –
Well made and easy on my back
This chair is well built, comfortable and has good lumbar support for my back. The lumbar support looks like it would be way too much but it is soft buy firm and provides just the right amount of support. My old chair was good but lacked lumbar support and my aging back needs that support.A good value for the price.
Indian Papa –
It looks nice but that’s about it.
This chair is not comfortable for prolonged sitting, more than 3-4 hrs. I weigh 170ish lbs and while sitting down, it squeaks every time you move. Also not able to adjust the arm rest front/back. Not able to adjust the Lumbar support vertically, which is important to consider for tall people. It looks nice and has good head rest support but that’s about it.
Mary da Silva –
Lumbar support is not where it should be.
In my opinion the lumbar support is way too low, even for a short person. It is not adjustable. You won’t notice how out of place it is until the entire thing is built rendering a return not achievable.Overall it is a budget chair. It didn’t take long to assemble since there are not that many parts. The quick instructions misses some pieces that you can’t add later. I’ll make it work for now but I have to say it’s a bit disappointing.
Alessandro Pecorilla –
Ho preso questa sedia per poter lavorare in Smart, nel complesso l’ho scelta per il supporto lombare e cervicale che attenuano la fatica nello stare seduti tante ore davanti ad uno schermo. Tra i pregi che ho notato:- Facilità nel montaggio.- Robustezza e qualità dei materiali.- Supporto cervicale regolabile sia in altezza che inclinazione.- Regolazione dei poggia-bracci in altezza.L’unica cosa che mi ha fatto storcere il naso é stata la guida utente per il montaggio, due passaggi son poco chiari e se non si fa attenzione si rischia di invertire alcuni processi di montaggio.L’azienda ha messo delle indicazioni su come montare i particolari ma “Curve side” può voler dire tutto o niente, metterei (é un consiglio, accettabile o meno) anche solo una breve etichetta di riconoscimento del verso sotto la sedia con l’aggiornamento della guida utente, in modo che possa orientarsi (per farvi capire nel passaggio che ho trovato difficoltoso non c’era nell’immagine guida l’orientamento rispetto ai fori M.6/M.8).Per il resto super soddisfatto! (anche della spedizione, ho ricevuto l’articolo nel giorno previsto senza ritardi):
JMP –
Das Feedback zu dem Stuhl ist äußerst positiv und hebt mehrere Aspekte hervor, die für potenzielle Käufer von Interesse sein könnten. Hier sind einige zentrale Punkte, die die Erfahrung zusammenfassen:1. **Verpackung und Lieferung**: Der Stuhl kam sorgfältig verpackt an, was auf einen hohen Standard im Versandprozess hinweist.2. **Einfacher Aufbau**: Der Aufbau erwies sich als unkompliziert, unterstützt durch qualitativ hochwertiges Werkzeug und gut gestaltete Anleitungen, die Nutzerfreundlichkeit fördern.3. **Materialqualität**: Alle Materialien, von der Kopfstütze bis zur Sitzfläche, machen einen hervorragenden Eindruck und vermitteln Langlebigkeit und Komfort.4. **Anpassungsfähigkeit**: Der Stuhl lässt sich problemlos auf unterschiedliche Körpergrößen anpassen, was für verschiedene Nutzer von Vorteil ist. In diesem Fall wurde eine Körpergröße von 1,74 m erwähnt.5. **Sitzkomfort**: Das Sitzkissen wurde als sehr komfortabel beschrieben, was die Nutzung über längere Zeiträume angenehm macht.6. **Rollen**: Die Rollen wurden nicht beurteilt, da der Nutzer alternative Rollen installiert hat. Dies könnte einen Hinweis darauf geben, dass je nach Nutzung auch individuelle Anpassungen in Betracht gezogen werden.Insgesamt vermittelt die Bewertung den Eindruck, dass der Stuhl eine ausgezeichnete Wahl ist und jeden Cent wert sein könnte, besonders für Nutzer, die Wert auf Qualität und Komfort legen. ⭐⭐⭐⭐⭐
Amy –
Saving my neck/back
javier –
Muy comoda. La mejor que he probado
Ben –
Really impressed with this chair. I’ve had this now for around 6 months and bought it to replace an old desk chair that had no back support at all. This chair gives a lot of back and lumbar support which is great when working from home all day.Plenty of adjustment. The only expecting would be the head rest, I find that the adjustment is slightly limited.Overall impressed with the build quality and the support it provides!