
SIHOO
SIHOO Doro C300 Ergonomic Office Chair with Ultra Soft 3D Armrests, Dynamic Lumbar Support for Home Office Chair, Adjustable Backrest Desk Chair, Swivel Big and Tall Computer Chair Black
In stock on Amazon.com
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ELABEST
$239.99
In stock on Amazon.com
Check PriceSpecs verified August 2026
Amazon.com data updated October 13, 2026, 2:34 pm ET. Price and availability are accurate as of the time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply.
| Seat height range | 19.6 to 23.6 in |
|---|---|
| Seat width | 20 in |
| Seat depth | 17.7 in |
| Seat depth adjustable | Not listed by the seller |
| Seat cushion | Not listed by the seller |
| Cushion thickness | Not listed by the seller |
| Back material | Mesh |
| Backrest height | Not listed by the seller |
| Backrest width | Not listed by the seller |
| Armrests | 3D adjustable |
| Lumbar support | Yes |
| Lumbar adjustments | Height |
| Headrest | Not listed by the seller |
| Max recline | Not listed by the seller |
| Tilt mechanism | synchro-tilt |
| Base material | Not listed by the seller |
| Casters | Polyurethane |
| Gas lift | Not listed by the seller |
| Weight capacity | Not listed by the seller |
| Chair weight | Not listed by the seller |
| Overall height | 41.7 to 45.4 in |
| Warranty | Not listed by the seller |
| Certifications | BIFMA |
A comfortable seat height is about a quarter of your body height. Here is how this chair's listed seat range lines up (how we rate).
| Your height | Seat range | Fit |
|---|---|---|
| 4'11" to 5'3" | 19.6 to 23.6 in seat (ideal about 15.3 in) | Seat may be too high |
| 5'4" to 5'7" | 19.6 to 23.6 in seat (ideal about 16.4 in) | Seat may be too high |
| 5'8" to 5'11" | 19.6 to 23.6 in seat (ideal about 17.4 in) | Seat may be too high |
| 6'0" to 6'3" | 19.6 to 23.6 in seat (ideal about 18.4 in) | Seat may be too high |
| 6'4" and up | 19.6 to 23.6 in seat (ideal about 19.3 in) | Seat may be too high |
ELABEST leads its category on adjustment: the 3D arms, a synchro-tilt with its own tension control and a lumbar that moves in height add up to the highest adjustability sub-score there. The Ergo Score is 52.
The tilt is a synchro-tilt with an adjustable tension and 3 lock positions. The lumbar adjusts in height. The back and the seat upholstery are mesh, and the casters are PU. A recline angle is not stated.

SIHOO
In stock on Amazon.com
Why consider: States a headrest and a 3-year warranty, neither of which the ELABEST listing states.

Marsail
In stock on Amazon.com
Why consider: Lists a recline angle and lumbar depth adjustment, neither of which the ELABEST states.
The seat is listed at 20 inches wide and 17.7 inches deep.
Yes, it names BIFMA.

SIHOO
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TRALT
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Nouhaus
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GABRYLLY
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Amazon.com data updated October 13, 2026, 2:34 pm ET. Price and availability are accurate as of the time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply.