---
product_id: 422223779
title: "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: "¥133753"
currency: JPY
in_stock: true
reviews_count: 8
category: "The Sleep Company"
url: https://www.desertcart.jp/products/422223779-onyx-orthopedic-office-chair-patented-smartgrid-seat-adjustable-lumbar-support
store_origin: JP
region: Japan
---

# 360° swivel with anti-scratch 60mm nylon casters Patented SmartGRID seat for pressure-free comfort Adjustable lumbar & armrests for personalized ergonomics 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:** ¥133753
**Availability:** ✅ In Stock

## Summary

> 🖥️ Elevate your workspace, sit smarter, work better!

## 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 | Black by the sleep company
- **How much does it cost?** ¥133753 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/422223779-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

- • **Built to Last with Confidence:** Premium Samhongsa gas-lift supports up to 150kg, backed by a 3-year hassle-free warranty and free installation.
- • **Move Freely, Work Effortlessly:** Smooth 360° swivel and durable anti-scratch wheels glide silently across any floor, enhancing your mobility.
- • **Tailored Support for Your Back:** Adjustable lumbar support and contoured high back keep your posture perfect, preventing aches and boosting focus.
- • **Weightless Comfort, All Day Long:** SmartGRID tech cushions your spine, reducing pressure and fatigue during marathon work sessions.
- • **Customizable Fit at Your Fingertips:** Easily adjust seat height, armrests, and tilt with intuitive controls to create your ideal ergonomic setup.

## Overview

The Sleep Company Onyx Orthopedic Office Chair features patented SmartGRID technology that offers pressure-free, breathable seating with multiple air channels. Its ergonomic high backrest with adjustable lumbar support promotes healthy posture for extended work hours. Equipped with 360° swivel anti-scratch nylon casters and customizable armrests, seat height, and tilt, it supports up to 150kg. Designed for both home and office, it comes with free installation and a 3-year manufacturer warranty, making it a premium choice for professionals seeking comfort and durability.

## 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: Good office chair with Lumbar support - This office chair I snagged online has been a total game-changer for my workday. Seriously, it's so comfortable, I actually look forward to sitting down at my desk now. The lumbar support is just right, and the adjustable features let me dial in the perfect position. Plus, it looks pretty sharp in my home office setup. Definitely a solid purchase for anyone spending long hours seated.
Review: Value for money - Product is amazing. Great comfort for the money. Installation was quick and seamless

## 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 – 3 Years Manufacturer's Professional and Hassle-Free Warranty applicable from the date of delivery | ISTA Standard packaging for reducing in-transit damage

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09VZ19531 |
| Age Range Description | Adult |
| Arm Style | With Arm Rest |
| Back Style | Solid Back |
| Bed Type | Adjustable |
| Best Sellers Rank | #5,214 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 2,928 Reviews |
| Fill Material | Patented SmartGRID |
| Finish Types | Chrome Finish |
| Frame Material | Nylon |
| Furniture Finish | Black |
| Included Components | 1 Onyx SmartGRID Chair Black, Warranty Card |
| Indoor Outdoor Usage | Indoor |
| Is Assembly Required? | Yes |
| 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 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 | 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 | 3 Years Manufacturing warranty |
| 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

![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/61PsXVbth-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

### ⭐⭐⭐⭐⭐ Good office chair with Lumbar support
*by A***N on 17 January 2026*

This office chair I snagged online has been a total game-changer for my workday. Seriously, it's so comfortable, I actually look forward to sitting down at my desk now. The lumbar support is just right, and the adjustable features let me dial in the perfect position. Plus, it looks pretty sharp in my home office setup. Definitely a solid purchase for anyone spending long hours seated.

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

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

### ⭐⭐⭐⭐ 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 Japan*
*Store origin: JP*
*Last updated: 2026-02-26*