---
product_id: 441959931
title: "- Onyx Orthopedic Office Chair | Patented SmartGRID seat | Adjustable Lumbar Support | Ergonomic Sitting Posture | High Back Chair | Work, Home, Study | Free Installation | Grey"
brand: "the sleep company"
price: "€ 634.86"
currency: EUR
in_stock: true
reviews_count: 8
category: "The Sleep Company"
url: https://www.desertcart.nl/products/441959931-onyx-orthopedic-office-chair-patented-smartgrid-seat-adjustable-lumbar-support
store_origin: NL
region: Netherlands
---

# 360° swivel with anti-scratch wheels Adjustable lumbar & armrests Patented SmartGRID seat technology - Onyx Orthopedic Office Chair | Patented SmartGRID seat | Adjustable Lumbar Support | Ergonomic Sitting Posture | High Back Chair | Work, Home, Study | Free Installation | Grey

**Brand:** the sleep company
**Price:** € 634.86
**Availability:** ✅ In Stock

## Summary

> 🪑 Elevate your workday with the Onyx — where comfort meets cutting-edge innovation!

## Quick Answers

- **What is this?** - Onyx Orthopedic Office Chair | Patented SmartGRID seat | Adjustable Lumbar Support | Ergonomic Sitting Posture | High Back Chair | Work, Home, Study | Free Installation | Grey by the sleep company
- **How much does it cost?** € 634.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/441959931-onyx-orthopedic-office-chair-patented-smartgrid-seat-adjustable-lumbar-support)

## 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

- • **Tailored Lumbar Support:** Adjustable lumbar system ensures your spine stays in its natural S-curve for healthier posture during long work hours.
- • **Premium Build & Custom Fit:** Top-grade Samhongsa gas-lift supports up to 150kg with easy height adjustment and 2D armrests for personalized comfort.
- • **Ergonomic SmartGRID Comfort:** Experience weightless support with patented SmartGRID tech that cushions your tailbone and keeps you cool all day.
- • **Smooth Mobility & Stability:** 360° swivel and 60mm anti-scratch casters glide effortlessly on any surface, making movement seamless and stylish.
- • **Hassle-Free Setup & Warranty:** Free professional installation plus a 3-year manufacturer warranty means you’re covered and ready to work in style.

## Overview

The Sleep Company Onyx Orthopedic Office Chair features patented SmartGRID technology for superior tailbone and spinal support, adjustable lumbar and armrests for ergonomic posture, and smooth 360° swivel with anti-scratch wheels. Designed for professionals balancing work-from-home and office life, it supports up to 150kg, includes free installation, and comes with a 3-year warranty, making it a premium yet practical choice for long hours of productive sitting.

## 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 | Grey : desertcart.in: Home & Kitchen

Review: Value for money - Product is amazing. Great comfort for the money. Installation was quick and seamless
Review: Excellent comfort and Build quality - The build quality feels premium with sturdy materials and smooth adjustment mechanisms. The height adjustment, recline, and armrest settings all function effortlessly. The fabric/foam quality is also impressive, giving a plush and durable feel.

## Features

- Patented SmartGRID Technology: Our Orthopedic ergonomic chair seat is created using Patented SmartGRID Technology (As per Indian patent no. 345890). It supports your tailbone and adds extra padding to your tushy for those long working hours. No Pressure Support of this SmartGRID office chair helps your spine stay in its natural position and makes you feel weightless. Moreover, the computer chair has multiple air channels to keep your 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 your 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. Our 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- The Onyx orthopedic office chair comes with a 3-year hassle-free warranty from the manufacturer, starting from the date of delivery. We use ISTA Standard packaging to minimize any damage during transportation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09Y281GGW |
| Age Range Description | Adult |
| Arm Style | with Arm |
| Back Style | Solid Back |
| Bed Type | Adjustable |
| Best Sellers Rank | #2,341 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #14 in Home Office Desk Chairs |
| Brand | The Sleep Company |
| Chair Backrest Width | 46 Centimetres |
| Colour | Grey |
| Country of Origin | India |
| Customer Reviews | 4.0 out of 5 stars 2,840 Reviews |
| Fill Material | Foam |
| Finish Types | Chrome Finish |
| Frame Material | Nylon |
| Furniture Finish | Black |
| Importer Contact Information | The Sleep Company, Comfort Grid Technologies Pvt Ltd |
| Included Components | 1 Onyx SmartGRID Chair Black & Grey, Warranty Card |
| Indoor Outdoor Usage | Indoor |
| Is Customisable? | No |
| Item Dimensions D x W x H | 48D x 62W x 117H Centimeters |
| Item Height | 117 Centimeters |
| 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 |
| Material | SmartGRID |
| Maximum Weight Recommendation | 150 Kilograms |
| Model Name | Onyx |
| Model number | Onyx |
| Packer Contact Information | The Sleep Company Mumbai Maharashtra |
| Pattern | Grey |
| Product Care Instructions | Wipe Clean |
| Product Dimensions | 48D x 62W x 117H Centimeters |
| Product Features | Adjustable Lumbar, Ergonomic, Adjustable Headrest, Arm Rest, Scratch Resistant, Swivel |
| Reclining Position Count | 1 |
| Recommended Uses For Product | Office |
| Room Type | Living Room |
| Seat Back Interior Height | 57 Centimetres |
| Seat Depth | 48.3 Centimeters |
| Seat Height | 55 Centimetres |
| Seat Length | 52 centimetres |
| Seat Material Type | SmartGRID |
| Shape | l-shaped |
| Size | High Back |
| Style | Plus |
| Surface Recommendation | Hard Floor |
| Unit Count | 1 Count |
| Warranty Description | 3 Years Manufacturing warranty |
| Wood Type | SmartGRID |

## Product Details

- **Back Style:** Solid Back
- **Brand:** The Sleep Company
- **Colour:** Grey
- **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
- **Special Feature:** Adjustable Lumbar, Ergonomic, Adjustable Headrest, Arm Rest, Scratch Resistant, Swivel

## Images

![- Onyx Orthopedic Office Chair | Patented SmartGRID seat | Adjustable Lumbar Support | Ergonomic Sitting Posture | High Back Chair | Work, Home, Study | Free Installation | Grey - Image 1](https://m.media-amazon.com/images/I/51o4X4+Dg-L.jpg)

## Available Options

This product comes in different **Color, Model** 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

### ⭐⭐⭐⭐⭐ Value for money
*by S***A on 9 January 2026*

Product is amazing. Great comfort for the money. Installation was quick and seamless

### ⭐⭐⭐⭐⭐ Excellent comfort and Build quality
*by L***D on 4 December 2025*

The build quality feels premium with sturdy materials and smooth adjustment mechanisms. The height adjustment, recline, and armrest settings all function effortlessly. The fabric/foam quality is also impressive, giving a plush and durable feel.

### ⭐⭐⭐⭐ Comfortable, Supportive, and Worth It!
*by P***N on 29 October 2025*

I’ve been using **The Sleep Company Onyx Orthopedic Office Chair** for a few weeks, and it’s been a great upgrade. The **SmartGRID technology** and **adjustable lumbar support** make long work hours much more comfortable, and the **high backrest** gives good neck and shoulder support. The **upright seating position** takes a little getting used to, but once you adjust, it feels very supportive. The **seat cushion** may seem a bit flimsy at first, yet it’s comfortable even for long sittings. The **armrests could use a bit more cushioning**, though they’re still functional and well-placed. Also, the **free assembly service arranged by Amazon** was smooth and quick. Overall, a **great ergonomic chair** with minor improvements needed but excellent comfort, support, and value for the price!

## 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 & Grey
- The Sleep Company SmartGRID Ortho Pro Seat Cushion for Chair | Car Seat Driving Cushion to Reduce Back Pain | 600+ Cooling Air Channels | Sitting Pillow for Office Chair, Car Seat, Home Chair | Black

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**Shop now:** [https://www.desertcart.nl/products/441959931-onyx-orthopedic-office-chair-patented-smartgrid-seat-adjustable-lumbar-support](https://www.desertcart.nl/products/441959931-onyx-orthopedic-office-chair-patented-smartgrid-seat-adjustable-lumbar-support)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-24*