Compared with other brands
SIHOO Model M57 Ergonomic Chair vs Bewell Foster
Both chairs side by side, to help you choose the one that fits how you work.
| Feature |  SIHOO Model M57 Ergonomic Chair | Bewell Foster* |
|---|---|---|
| Price | ฿6,590 | ฿5,999 |
| Back support | Mechanical (no power) — 2D (height and depth) | Mechanical (no power) — Height-adjustable lumbar support |
| Needs charging | No | No |
| Recline | 109–126° | 90–118° |
| Maximum load | 136 kg | 136 kg |
| User height | 150–190 cm | 160 cm |
| Warranty | 5–7 years | 5 years |
| Try in a showroom | Showroom try-outs | Showroom try-outs |
Bewell Foster: Sold at bewellofficial.com and Bewell Ergonomic Space stores · the 5-year warranty covers the gas lift, base and castors; replacement within 7 days for manufacturing or delivery damage (registration required) · 52 cm wide seat
* Bewell Foster data as of 2 November 2026 from bewellofficial.com. Prices and specifications may change; please check with the seller.
SIHOO data comes from the product page and verified specifications. "See product page" marks a value still being confirmed.
Which one suits whom
The Bewell Foster suits larger people who want a wide (52 cm) seat for less money, with a 7-position headrest, 3D armrests and height-adjustable lumbar support, and stores to try it in.
The SIHOO M57 suits people who run warm and want breathable mesh on both the backrest and the seat, with finer 2D lumbar adjustment, 3D armrests and a deeper recline.
What the SIHOO Model M57 Ergonomic Chair offers
- Try it in a showroom before you decide
- 0% instalments with a card for up to 6 months (about ฿1,099/month)
- Mechanical adjustment, nothing to charge
- Price ฿6,590
Frequently asked questions
How does the Bewell Foster differ from the SIHOO Model M57 Ergonomic Chair?
The Bewell Foster uses mechanical back support, while the SIHOO Model M57 Ergonomic Chair uses mechanical support. Price, warranty and specifications are compared in the table above.
Does the SIHOO Model M57 Ergonomic Chair need charging?
No. The SIHOO Model M57 Ergonomic Chair adjusts mechanically, so there is nothing to charge.
Can I try the SIHOO Model M57 Ergonomic Chair before buying?
Yes. Book a time to try it at a SIHOO showroom on the showroom visit page.
Can I pay for the SIHOO Model M57 Ergonomic Chair in 0% instalments?
Yes. 0% instalments with a card for up to 6 months, about ฿1,099/month.
Where does the Bewell Foster data on this page come from?
From bewellofficial.com, checked on 2 November 2026. Prices and specifications may have changed since; please check with the seller.