---
product_id: 422223779
title: "The Sleep Company Onyx Orthopedic Office Chair | Patented SmartGRID seat | Adjustable Lumbar Support | Ergonomic Sitting Posture | High Back Chair | Work, Home, Study | Free Installation | Black"
brand: "the sleep company"
price: "6441.91 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "The Sleep Company"
url: https://www.desertcart.tn/products/422223779-the-sleep-company-onyx-orthopedic-office-chair-patented-smartgrid-seat
store_origin: TN
region: Tunisia
---

# 360° swivel with anti-scratch 60mm nylon casters Patented SmartGRID seat for pressure-free comfort Adjustable lumbar & armrests for personalized support The Sleep Company Onyx Orthopedic Office Chair | Patented SmartGRID seat | Adjustable Lumbar Support | Ergonomic Sitting Posture | High Back Chair | Work, Home, Study | Free Installation | Black

**Brand:** the sleep company
**Price:** 6441.91 DT
**Availability:** ✅ In Stock

## Summary

> 🖤 Elevate your workspace with the Onyx — where comfort meets cutting-edge ergonomic innovation!

## Quick Answers

- **What is this?** The Sleep Company Onyx Orthopedic Office Chair | Patented SmartGRID seat | Adjustable Lumbar Support | Ergonomic Sitting Posture | High Back Chair | Work, Home, Study | Free Installation | Black by the sleep company
- **How much does it cost?** 6441.91 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/422223779-the-sleep-company-onyx-orthopedic-office-chair-patented-smartgrid-seat)

## Best For

- the sleep company enthusiasts

## Why This Product

- Trusted the sleep company brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Customizable Support System:** Adjust lumbar support, seat height, and 2D armrests effortlessly to maintain perfect posture during long work or study sessions.
- • **Hassle-Free Setup & Warranty:** Enjoy free professional installation in select areas plus a 3-year manufacturer warranty for peace of mind.
- • **Smooth Mobility & Durability:** Glide seamlessly on anti-scratch nylon wheels with 360° swivel, designed for any floor surface without wear or noise.
- • **Ergonomic SmartGRID Technology:** Experience weightless comfort with patented SmartGRID that supports your spine’s natural S-shape and keeps you cool all day.
- • **Robust Build with Premium Materials:** Crafted with a sturdy nylon frame and Samhongsa gas-lift system supporting up to 150kg, built to last through your busiest days.

## Overview

The Sleep Company Onyx Orthopedic Office Chair features patented SmartGRID technology that provides pressure-free, breathable seating with adjustable lumbar support and armrests. Designed for ergonomic posture, it supports up to 150kg with a durable nylon frame and smooth 360° swivel wheels. Ideal for office, home, or study use, it comes with free installation in select locations and a 3-year warranty, making it a premium choice for professionals seeking comfort and style.

## Description

The Sleep Company Onyx Orthopedic Office Chair | Patented SmartGRID seat | Adjustable Lumbar Support | Ergonomic Sitting Posture | High Back Chair | Work, Home, Study | Free Installation | Black : desertcart.in: Home & Kitchen

Review: Exceptional Comfort with SmartGRID – Highly Recommended for Long Hours! - 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 desertcart/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!
Review: Wonderful chair for long work hours. - Amazing chair. Perfect installation by sleep company team. Thanks to Ankit for installing.

## Features

- SmartGRID Technology: Our Orthopedic ergonomic chair seat is created using SmartGRID Technology. No Pressure Support of this SmartGRID office chair helps the spine stay in its natural position and offers the feeling of weightlessness. Moreover, this computer chair has multiple air channels to keep the seat and back cool & comfortable
- Orthopedic Back Support: The backrest of the office chair is designed with a contoured shape with built-in SmartGRID technology to support the spine in its natural and healthy S shape. The Adjustable Lumbar support provides the necessary back support for extended periods of work, making it an ideal ergonomic chair for both home and office use.
- Comfort Seating: Sit effortlessly on the SmartGRID Onyx ergonomic office chair. The adjustable seat can be easily raised or lowered using a lever and has a position lock system for personalized comfort. This Orthopedic office chairs are equipped with the top-quality Samhongsa Gas-Lift system and can support weights of up to 120kgs. The 2D adjustable armrests provide soft support and can be positioned as per your preference.
- Supports Every Movement: Now moving an Orthopedic chair can be more fun. The office chairs come with a 60mm casters with nylon wheelbase. The wheels of the computer chair come with 360 swivel movement and are made of Anti-Scratch properties for easy movement on any surface.
- Warranty & Quality - Made In India | 3 Years Manufacturer'S Professional And Hassle-Free Warranty Applicable From The Date Of Delivery | Ista Standard Packaging For Reducing In-Transit Damage | Installation By The Sleep Company Technicians Will Be Provided On Selected Pincodes.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09VZ19531 |
| Age Range Description | Adult |
| Arm Style | With Arm Rest |
| Back Style | Solid Back |
| Best Sellers Rank | #4,072 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #18 in Home Office Desk Chairs |
| Brand | The Sleep Company |
| Chair Backrest Width | 46 Centimetres |
| Colour | Black |
| Country of Origin | India |
| Customer Reviews | 4.1 out of 5 stars 3,150 Reviews |
| Fill Material | Patented SmartGRID |
| Finish Types | Chrome Finish |
| Form Factor | Medium Firm |
| Frame Material | Nylon |
| Furniture Base Movement | Swivel |
| Furniture Finish | Black |
| Included Components | 1 Onyx SmartGRID Chair Black, Warranty Card |
| Indoor Outdoor Usage | Indoor |
| Is Assembly Required? | Yes |
| Is Customisable? | No |
| Item Depth | 19 inches |
| Item Dimensions | 48 x 62 x 117 Centimeters |
| Item Dimensions D x W x H | 48D x 62W x 117H Centimeters |
| Item Type Name | Adjustable |
| Item Weight | 22 Kilograms |
| Leg Style | wheels |
| Manufacturer | Comfort Grid Technologies Private Limited, Warehouse no. S4, South Park Welspun One Logistics Park, DOB Estate, Bapgaon Sonale Road, Lonad, Bapgaon Village,, Bhiwandi, Maharashtra, 421302, IN, The Sleep Company Mumbai Maharashtra |
| Manufacturer Contact Information | Comfort Grid Technologies Private Limited, Warehouse no. S4, South Park Welspun One Logistics Park, DOB Estate, Bapgaon Sonale Road, Lonad, Bapgaon Village,, Bhiwandi, Maharashtra, 421302, IN |
| Manufacturer Part Number | TSCOC002 |
| Material | SmartGRID |
| Maximum Weight Recommendation | 150 Kilograms |
| Model Name | Onyx |
| Model number | Onyx |
| Number of Items | 1 |
| Number of Packs | 1 |
| Packer Contact Information | The Sleep Company Mumbai Maharashtra |
| Pattern | Black |
| Product Care Instructions | Wipe Clean |
| Product Dimensions | 48D x 62W x 117H Centimeters |
| Product Features | Adjustable Lumbar, Adjustable Height, Adjustable Arm Rest, Rolling, Adjustable Headrest, Adjustable Height, Ergonomic, Adjustable Tilt Control |
| Reclining Position Count | 3 |
| Recommended Uses For Product | Office |
| Room Type | Living Room, Office, Meeting Room |
| Seat Back Interior Height | 31 Inches |
| Seat Depth | 48.3 Centimeters |
| Seat Height | 23 Inches |
| Seat Length | 25 Inches |
| Seat Material Type | SmartGRID |
| Shape | Ergonomic |
| Size | High Back |
| Style | Plus |
| Surface Recommendation | Hard Floor |
| Unit Count | 1 Count |
| Warranty Description | Warranty Covers: Mechanism which allows the reclining of chairs. Hydraulic Gas lift which allows the height adjustment of the seat. Wheelbase which provides strength and support to the chair. Mechanism of armrests which provide the movements of armrests. Warranty Does Not Cover: Armrest/Footrest/Mechanism or any part damage caused by incorrect use. Alterations or modifications to the chair made by… |
| Wood Type | SmartGRID |

## Product Details

- **Back Style:** Solid Back
- **Brand:** The Sleep Company
- **Colour:** Black
- **Frame Material:** Nylon
- **Item Weight:** 22 Kilograms
- **Material:** SmartGRID
- **Product Care Instructions:** Wipe Clean
- **Product Dimensions:** 48D x 62W x 117H Centimeters
- **Size:** High Back

## Images

![The Sleep Company Onyx Orthopedic Office Chair | Patented SmartGRID seat | Adjustable Lumbar Support | Ergonomic Sitting Posture | High Back Chair | Work, Home, Study | Free Installation | Black - Image 1](https://m.media-amazon.com/images/I/613WzfVS2vL.jpg)
![The Sleep Company Onyx Orthopedic Office Chair | Patented SmartGRID seat | Adjustable Lumbar Support | Ergonomic Sitting Posture | High Back Chair | Work, Home, Study | Free Installation | Black - Image 2](https://m.media-amazon.com/images/I/71fyy6yvKjL.jpg)
![The Sleep Company Onyx Orthopedic Office Chair | Patented SmartGRID seat | Adjustable Lumbar Support | Ergonomic Sitting Posture | High Back Chair | Work, Home, Study | Free Installation | Black - Image 3](https://m.media-amazon.com/images/I/71+JUaFl8aL.jpg)
![The Sleep Company Onyx Orthopedic Office Chair | Patented SmartGRID seat | Adjustable Lumbar Support | Ergonomic Sitting Posture | High Back Chair | Work, Home, Study | Free Installation | Black - Image 4](https://m.media-amazon.com/images/I/7144ui3CfQL.jpg)
![The Sleep Company Onyx Orthopedic Office Chair | Patented SmartGRID seat | Adjustable Lumbar Support | Ergonomic Sitting Posture | High Back Chair | Work, Home, Study | Free Installation | Black - Image 5](https://m.media-amazon.com/images/I/71iRbSqhfxL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: what is the chair sitting height from the ground. I have a table which is 3feet. is the chair sitting height enough for 3 feet table?**
A: Yes, the chair sitting height is enough for 3 feet table

**Q: Whats the dimensions between the arm rests? Thats the gap to get into the seat**
A: The gap is 25 inches. Happy & Healthy Sitting

**Q: Does back support gets white spots when sweat gets dried**
A: No...iam using this chair 3 to 4 months...but iam not face that problem

**Q: Are the wheels detachable?**
A: No

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exceptional Comfort with SmartGRID – Highly Recommended for Long Hours!
*by R***R on 9 July 2026*

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!

### ⭐⭐⭐⭐⭐ Wonderful chair for long work hours.
*by P***R on 11 October 2026*

Amazing chair. Perfect installation by sleep company team. Thanks to Ankit for installing.

### ⭐⭐⭐⭐ Comfortable ergonomic chair which is a must if you care for your spine
*by ⚡***⚡ on 29 September 2024*

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.

## Frequently Bought Together

- The Sleep Company Onyx Orthopedic Office Chair | Patented SmartGRID Technology | Adjustable Lumbar Support for Ergonomic Sitting Posture | High Back Office Chair for Work, Home, Study | Black
- TEKAVO Engineered Wood - Matte Computer Table for Home Office with Storage|140 Cm Length (Medium-140) / DIY, Black

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-10-17*