SIHOO M59AS vs SIHOO M57: Which Should You Buy?
The M59AS has automatic lumbar support, but the M57 lists $130 lower.
$130
lower starting price for SIHOO M57 than SIHOO M59AS at the brand stores
Differences at a glance
Sources
- Sihoo M59AS Ergonomic Chair | Dual-Section Back & Flip-Up Armrests – UK Sihoo official Shop ↗Checked Oct 9, 2026
- Sihoo M57 Netz Bürostuhl – DE Sihoo Offizieller Shop ↗Checked Oct 9, 2026
- Sihoo M59AS Ergonomic Office Chair with Dual-Section Backrest – Official US Sihoo Store ↗Checked Oct 9, 2026
- SIHOO M57 Ergonomic Mesh Office Chair – Official US Sihoo Store ↗Checked Oct 9, 2026
- Price
- $449.99$319.99
- Seat height
- 46.5–56.5 cm46–55 cm (≈ 18.1-21.7 in)
- Seat depth
- 17.13 in (≈ 43.5 cm)18.11 in (≈ 46 cm)
- Load capacity
- 330 lb (≈ 150 kg)330 lb (≈ 150 kg)
- Recline
- Recline up to 126°Reclines up to 126°
- Arms
- 3D coordinated flip-up armrests (flip up and down, left and right, forward and backward)3D coordinated armrests (up and down, left and right, forward and backward)
- Headrest
- Double-jointed headrest (height and angle)Headrest adjusts vertically up to 3.9 inches and rotates 45 degrees
- Lumbar support
- Dynamic lumbar support in a dual-section backrestDual-adjustable lumbar support (vertical and horizontal)
- Warranty
- 3 years3 years
Questions
Which is cheaper, the SIHOO M59AS or the SIHOO M57?
The SIHOO M57 is cheaper to start: $319.99 versus $449.99 for the SIHOO M59AS at the brand stores (Oct 2026).
Which has a higher weight capacity?
Neither. Both are rated for 330 lb in their official specifications.
Which has a headrest?
Both: the SIHOO M59AS as standard and the SIHOO M57 as standard.
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Read the full comparison
Key difference: The M59AS has automatic lumbar support, but the M57 lists $130 lower.
SIHOO's official store pages are the only source for the M59AS and M57 figures below; list prices are the store's regular US prices, and neither chair was tested by Chairpedia.
Why compare them
Why put the SIHOO M59AS next to the SIHOO M57? The M59AS and M57 sit next to each other in SIHOO's mesh range; both have a mesh back and a headrest, so the differences are in the details.
Specs side by side
| Official specs | SIHOO M59AS | SIHOO M57 |
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| Recline |
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| Arms |
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| Lumbar support |
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| Headrest |
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| Chair weight |
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| Recommended user height | Not stated |
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Strengths and weaknesses
SIHOO M59AS
Strengths
- Automatic lumbar support ("Dynamic lumbar support in a dual-section backrest"), where the M57's is set by hand.
Weaknesses
- Costs more: from $449.99 against $319.99 for the M57.
- No manual lumbar setting is listed for the M59AS, unlike the M57.
SIHOO M57
Strengths
- Lower list price: from $319.99 against $449.99 for the M59AS.
- Lumbar you set by hand ("Dual-adjustable lumbar support (vertical and horizontal)"), where the M59AS's works on its own.
Weaknesses
- Lumbar is set by hand ("Dual-adjustable lumbar support (vertical and horizontal)"), while the M59AS's moves on its own.
How they differ
Lumbar support. The SIHOO M59AS lists “Dynamic lumbar support in a dual-section backrest”, the SIHOO M57 “Dual-adjustable lumbar support (vertical and horizontal)”. The M59AS's lumbar moves on its own as you shift, while the M57's is positioned by hand.
Price. At regular US list prices the SIHOO M59AS is $449.99 and the SIHOO M57 is $319.99. The M57 lists $130 below the M59AS, before any store sale. Price options: the M59AS — Black and White $449.99; the M57 — Black, Gray and White $319.99.
Seat size. Seat height: the SIHOO M59AS lists “18.31–22.24 in (46.5–56.5 cm)”, the SIHOO M57 “≈18.1–21.7 in (46–55 cm)”. Seat width: the SIHOO M59AS lists “19.88 in (50.5 cm)”, the SIHOO M57 “≈20.1 in (51 cm)”. Seat depth: the SIHOO M59AS lists “17.13 in (≈43.5 cm)”, the SIHOO M57 “18.11 in (≈46 cm)”.
Other details. For the M59AS and M57, the table above gives the armrests, headrest and chair weight in each brand's own wording.
Same on both. The M59AS and M57 list the same recline (up to 126°), warranty (3 years) and maximum load (330 lb, ≈150 kg).
Who should buy which
- Pick the M59AS over the M57 if you want lumbar support that adjusts itself as you move, with nothing to set.
- Pick the M59AS over the M57 if you want a lighter chair to move around: 36.7 lb (≈16.6 kg) against 44.8 lb (≈20.3 kg).
- Pick the M59AS over the M57 if you want a seat that rises higher: 18.31–22.24 in (46.5–56.5 cm).
- Pick the M57 over the M59AS if you want the lower price — the M57 lists $130 below the M59AS.
- Pick the M57 over the M59AS if you want a lumbar position you set yourself and that stays put.
Sources
- SIHOO M59AS (compared here with the M57): Sihoo M59AS Ergonomic Chair | Dual-Section Back & Flip-Up Armrests – UK Sihoo official Shop; Sihoo M59AS Ergonomic Office Chair with Dual-Section Backrest – Official US Sihoo Store, checked 2026-10-09; US list price from SIHOO US Official Store, checked 2026-10-09.
- SIHOO M57 (compared here with the M59AS): Sihoo M57 Netz Bürostuhl – DE Sihoo Offizieller Shop; SIHOO M57 Ergonomic Mesh Office Chair – Official US Sihoo Store, checked 2026-10-09; US list price from SIHOO US Official Store, checked 2026-10-09.
- Figures marked ≈ for the M59AS and M57 are Chairpedia's unit conversions, not brand figures.
Frequently asked
- Which has automatic lumbar support, the M59AS or the M57?
- The SIHOO M59AS, described as "Dynamic lumbar support in a dual-section backrest", while the SIHOO M57's lumbar is described as "Dual-adjustable lumbar support (vertical and horizontal)".
- Which is cheaper, the SIHOO M59AS or the SIHOO M57?
- The SIHOO M57: at regular US list prices it starts at $319.99, against $449.99 for the SIHOO M59AS, a gap of $130; sale prices for the M59AS and M57 change often, so check both stores before ordering.
- Can you set the lumbar by hand on the M57, unlike the M59AS?
- Yes: the SIHOO M57 is listed with "Dual-adjustable lumbar support (vertical and horizontal)", while the SIHOO M59AS's lumbar works on its own ("Dynamic lumbar support in a dual-section backrest").
- Which is lighter, the M59AS or the M57?
- The SIHOO M59AS, at 36.7 lb (≈16.6 kg) against 44.8 lb (≈20.3 kg) for the SIHOO M57.
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