SIHOO M18 Ergonomic Office Chair Review 2026
Best for Most
A mesh chair with adjustable lumbar, a 2D headrest and 2D arms at a budget price.
Amazon rating: 4.3/5 Amazon rating as of Oct 2026 · Price tier: Mid-range
By CompareMyDesk editorial team · Specs and rating checked
Comparing options? Read our best budget office chairs of 2026 buying guide.
What we like
- Adjustable lumbar support, 2D headrest and 2D armrests
- Seat height about 17-21 in (44-54 cm); recline 108-128 degrees (SIHOO)
- 3-year warranty and 30-day returns (listing)
- Cheapest chair here with both a headrest and adjustable lumbar (on sale when checked)
Things to consider
- Seat depth (18 in) is fixed; SIHOO suggests it for users about 5'6"-6'2"
- Arms don't pivot (2D, not 3D)
- The price we saw was a limited-time deal, so check the current price
Key specifications
Manufacturer claims, from the brand's product page or Amazon listing.
| Lumbar | Adjustable |
|---|---|
| Headrest | 2D adjustable |
| Armrests | 2D |
| Seat Height | 17-21 in (44-54 cm) |
| Seat Depth | 18 in, fixed |
| Recline | 108-128 degrees |
| Max Weight | 300 lb (SIHOO) |
| Warranty | 3 years |
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