The Sleep Company Onyx SmartGRID Orthopedic Office Chair
At a Glance
The Sleep Company Onyx is a premium orthopedic office chair featuring the brand’s patented SmartGRID technology, the same cushioning innovation found in their mattresses. It offers comprehensive adjustability with 2D headrest, 2D lumbar support, and 2D armrests, all backed by a 3-year warranty and 150 kg weight capacity. This is a serious ergonomic investment for professionals who spend 8+ hours at their desk.
Ergo Score: 100/100 | ₹9,321 | 4.1/5 stars
Who This Chair Is For
- All-day professionals (8+ hours): The SmartGRID seat technology and comprehensive adjustability are designed for extended sitting without fatigue
- Users with back or tailbone concerns: The patented SmartGRID cradles the tailbone and distributes weight evenly, reducing pressure points
- Heavier users up to 150 kg: Premium weight capacity with significant safety margin
- Those investing in long-term comfort: The 3-year warranty and premium build quality justify the higher price for daily professional use
Who Should Look Elsewhere
- Budget-conscious buyers: At ₹9,300+, this is 2-3x the price of capable alternatives, consider if you truly need SmartGRID technology
- Occasional users: The premium features are wasted if you’re not sitting 4+ hours daily
- Those preferring leather aesthetics: The mesh back and SmartGRID seat have a technical look that may not suit traditional office decor
Fit Guide
| Your Height | Your Weight | Fit Verdict |
|---|---|---|
| 5’2”–5’10” (157–178 cm) | Up to 150 kg | Excellent fit — full 2D adjustability accommodates this range perfectly |
| 5’10”–6’2” (178–188 cm) | Up to 150 kg | Good fit — 2D headrest and lumbar can extend for taller torsos |
| Below 5’2” or Above 6’2” | Up to 150 kg | May work — test 2D adjustment ranges; extreme heights may find limits |
The seat height range of 44-54 cm (estimated with Class 3 gas lift) accommodates a wide range of heights with standard Indian desks at 72-75 cm. The 2D adjustability across headrest, lumbar, and armrests means you can fine-tune the chair to your specific body proportions rather than conforming to fixed positions.
Specifications
| Feature | Detail |
|---|---|
| Seat Height Range | 44–54 cm (Class 3 gas lift) |
| Armrest | 2D |
| Lumbar Support | Adjustable |
| Headrest | Adjustable |
| Recline | 90–135° (3-position lock) |
| Tilt Mechanism | Multi-lock |
| Weight Capacity | 150 kg |
| Seat Material | Patented SmartGRID |
| Back Material | Mesh |
| Base | Chrome-finished nylon |
| Warranty | 3 years |
Ergo Score Breakdown
100/100
- Adjustability: 40/40 — The Onyx maxes out adjustability. 2D armrests (25 pts), adjustable lumbar (20 pts), adjustable headrest (10 pts), and multi-lock tilt mechanism (10 pts). Raw score of 65 capped at maximum.
- Support: 30/30 — Adjustable lumbar (20 pts) and mesh back (10 pts). SmartGRID seat is a unique material. Capped at maximum.
- Build Quality: 30/30 — Chrome-finished base (15 pts), exceptional 150 kg capacity (15 pts), and 3-year warranty (15 pts). Made in India with premium components. Raw score of 45 capped at maximum.
Setup Recommendations
- Leverage the 2D lumbar: Position the lumbar support at your lower back curve (typically belt level), then adjust depth so it fills the natural hollow without pushing you forward
- Calibrate the 2D headrest: Adjust height so the pad contacts your neck when reclined, then angle it to support without pushing your head forward during upright work
- Use all 3 recline positions: Lock at 90° for typing, use 110° for reading/thinking, and 135° for brief rest breaks, this prevents static posture strain
- Set armrests for your task: Height should support forearms at 90° elbow angle; pivot adjustment allows angling toward keyboard or outward for mouse use
Alternatives to Consider
ASTRIDE Ergofit
- Price: ₹4,236 | Ergo Score: 100/100
- Why consider: Half the price with similar ergo score. No SmartGRID technology, but chromium base, adjustable lumbar/headrest, and 3-year warranty. Best value if you don’t need SmartGRID specifically.
- View on Amazon
Green Soul Jupiter Superb
- Price: ₹6,864 | Ergo Score: 100/100
- Why consider: Lower price with 2D armrests, synchro-tilt, 3-year warranty. Different aesthetic, consider if you prefer Green Soul’s design language.
- View on Amazon
Da URBAN Merlion
- Price: ₹4,899-5,299 | Ergo Score: 100/100
- Why consider: About half the Onyx price with 2D armrests, adjustable lumbar, and 3-year warranty. Solid alternative if SmartGRID isn’t a priority.
- View on Amazon
FAQ
What makes SmartGRID technology different from regular foam?
Based on The Sleep Company’s specifications, SmartGRID uses a patented grid structure that adapts to body contours and distributes weight more evenly than traditional foam. It cradles the tailbone specifically, reducing the pressure points that cause discomfort during long sitting. The technology originated in their mattresses and is now applied to the Onyx chair seat. Whether this justifies the price premium over quality foam depends on your sensitivity to sitting fatigue.
Is the 3-year warranty really honored?
The Sleep Company is an established Indian brand. The chair includes free installation at delivery. The warranty covers manufacturing defects from the date of delivery, keep your purchase documentation accessible.
How does the Onyx compare to The Sleep Company’s other chairs?
The Onyx is The Sleep Company’s flagship office chair with full SmartGRID seat technology. They also offer a mid-back variant (without headrest) and budget options with fewer adjustability features. The Onyx represents their most comprehensive ergonomic offering for serious professional use.
Affiliate Disclosure: This page contains affiliate links to Amazon.in. If you purchase through these links, we may earn a small commission at no additional cost to you. Prices shown are indicative and subject to change — please check Amazon.in for the latest pricing and availability. We have not physically tested this product; all analysis is based on manufacturer specifications and publicly available information.