Onyx Orthopedic Office Chair | Patented SmartGRID seat | Adjustable Lumbar Support | Ergonomic Sitting Posture | High Back Chair | Work, Home, Study | Free Installation | Black

I purchased the The Sleep Company Onyx Orthopedic Chair recently, and after using it for my daily work and long study sessions, I am extremely satisfied with its performance. The Magic of SmartGRID: The seat cushion is the star of the show. Unlike regular foam chairs that sink over time, this patented SmartGRID technology distributes body weight perfectly. Even after sitting for 6-8 hours continuously, I feel absolutely no tailbone pressure or fatigue. Excellent Orthopedic Support: The backrest mimics the natural 'S' curve of the spine beautifully. It provides solid upper and lower back support, which has significantly improved my sitting posture. 3-Position Locking Recline: The multi-lock synchro-tilt mechanism is super smooth. I can lock it upright for deep focus work or tilt it back comfortably when I want to relax. Premium & Elite Aesthetics: The chair looks incredibly sleek, professional, and high-end. It instantly elevates the vibe of my workstation. Cons / Note for Buyers: The delivery and structure are solid, but please check the parts upon arrival. My chair's height adjustment lever had some minor transit scratches, though Amazon/The Sleep Company customer service is generally very helpful with part replacements. Final: If you are looking for a long-term investment for your spine health and want an elite level of comfort, don't hesitate. This chair is worth every single penny!

1 month product review-This chair is really good quality. My back pain problem is reliefed after using this chair.and the installation was prompt and effortless. For my installation Tutan Pal came and he did the installation job perfectly.

When you are sitting and working for long hours, if you are not careful you are bound to have medical issues. Until I had one, I continued with one of those traditional fancy chairs. After having cervical and lumbar issue, the diagnosis of which caused a lot, I started with my search for a good ergonomic chair to support my back/spine. I ordered even one for around 5k, but as soon as I opened the box, I raised a return because of poor quality. Post that I was clear that you get what you pay for... 🎁 INSIDE BOX 1x backrest 1x seat 1x locking mechanism 2x handle 1x castor and cover 1x headrest 1x gas lift 2x allen key 6x screws for handle, 3x for backrest, 4x for mechanism, 1x for headrest 2x metal bush for handle 2x plastic bushes for mechanism 1x manual (printed colored booklet, not A4 papers some have received) Dimensions: Seat: Width 480 mm , Depth 480 mm Back (height from top of seat): 510 mm Arm rest: length 240mm x with 70 mm Lumbar adjustment: 35mm Headrest/neckrest adjustment: 80 mm ➕ PROS 1. A chair with quality components and smooth mechanism 2. Be it wheels, rotation of chair, up/down movement its quite smooth 3. Gas lift mechanism is smooth, and provides ample adjustment of height (top of seat cushion from ground, with gas lift at bottom position ~450 mm, and with gas lift at top position ~570 mm) 4. Removable head rest is a plus, since if you are not comfortable with it, you can remove. 5. Backrest is made up of ~8-10 mm cushion (this is a non-mesh version where its just a mesh cloth). Even with this, you its quite breathable and comfortable for long sitting. 6. Overall chair provides good support to your spine, and helps manage cervical and lumbar pain. I am using a 1" cushion as well to increase height of neck to align it perfectly with the head rest for proper neck support. I cant say much about smartgrid, as I have not disassembled any of back rest or seat. 7. Adjustable armrest is a plus to give proper rest to arms and align position as per height of the table. 8. Versatile tilting/reclining back, with adjustable tilt tension. Tension can be loosened to make it tilt with natural tilting movement of our back. ➖ CONS 1. Since I paid quite a lot for this chair, I expected quality across elements, but the castor cover was with unfinished edges, which I had to clear using a blade 2. Better handrests could have been provided. These are a bit flimsy, and loose in the adjustable housing. Moreover, note that its hard plastic and no cushioning on the top. 3. Lumbar support is not rigid and has a lot of flexibility to it (in description its being called as firm, but its far from it). Because of that, you dont get stable lumbar support. ⚙️ USAGE SCENARIOS My height is around 5' 4" and the headrest even at its lowest position, barely aligns with my neck. So anyone with lesser height will find trouble with it, as if your head actually rests on the center of headrest and not on the top, you will soon start having neck pain. Best position will be with its center of curvature aligned to neck, with head resting on top of it to keep spine straight. In such a case, you only have the option to use the chair without neck rest. 🔨 PERFORMANCE Assembly may take anywhere between 15 mins to 60 mins depending on how proficient you are with tools I used power screwdriver for faster assembly, as machine screws are provided which have fine threads, so lots of turns to screw/unscrew 🏆 VERDICT I initially ordered a 5k chair, and the quality was pathetic. This is lives up to mark to provide good quality for the cost and provides sufficient support for long working hours. A few issues are there, but you get a good deal for the price you pay.

This is the worst office chair I have ever used. The design of the backrest significantly reduces the available sitting space, making it extremely uncomfortable, especially for taller people. If you are tall, it is very difficult to sit properly and comfortably in this chair. The shape of the backrest also does not provide adequate lower-back support. Overall, the sitting experience is extremely disappointing—in my opinion, it is even worse than sitting on a bench. At least a bench provides more space to sit comfortably. If you are planning to buy this chair, I strongly recommend visiting the showroom and trying it yourself before making a purchase. For me, this has been the worst office chair I have ever used, and I would not recommend it.

Such a comfortable chair I felt like online purchase may differ with offline purchase but having The Sleep company product gave me assurance that product is so valuable & awesome, so much comfortable..

Great product and great support by team

Good one and excellent service

Chair is sturdy, of premium quality.