SIHOO M57 vs Branch Ergonomic Chair: Which Should You Buy?

Key difference: The M57 includes a headrest that is only an option on the Branch chair, but the Branch chair has an adjustable seat depth.

Figures for the SIHOO M57 come from SIHOO's official pages and those for the Branch Ergonomic Chair from Branch's; prices are regular US list prices, and Chairpedia has not tested either chair.

Why compare them

Why put the SIHOO M57 next to the Branch Ergonomic Chair? The SIHOO M57 and the Branch Ergonomic Chair are both sold direct by their brands and often land on the same home-office shortlist.

Specs side by side

Strengths and weaknesses

SIHOO M57

Strengths

• Headrest included, while the Branch chair offers one only as an option.
• Higher maximum load: 330 lb (≈150 kg), against 275 lb (≈125 kg) on the Branch chair.
• Lower list price: from $319.99 against $369 for the Branch chair.
• Lumbar adjusts in two ways ("Dual-adjustable lumbar support (vertical and horizontal)"), against one on the Branch chair.

Weaknesses

• Only one seat depth is listed (18.11 in (≈46 cm)), while the Branch chair's adjusts.
• Shorter warranty: 3 years, against 7 years on the Branch chair.

Branch Ergonomic Chair

Strengths

• Seat depth adjusts over 18–22 in (≈46–56 cm), while the M57 lists a single depth.
• Longer warranty: 7 years, against 3 years on the M57.

Weaknesses

• Headrest only as an option, while the M57 includes one.
• Lower maximum load: 275 lb (≈125 kg), against 330 lb (≈150 kg) on the M57.
• Costs more: from $369 against $319.99 for the M57.
• Lumbar adjusts in one way only ("Height-adjustable and removable lumbar rest"), against two on the M57.

How they differ

Headrest. The SIHOO M57 lists “Headrest adjusts vertically up to 3.9 inches and rotates 45 degrees”, the Branch Ergonomic Chair “Optional Ergonomic Headrest (sold separately)”. The M57 includes a headrest; on the Branch chair it is an extra-cost option.

Seat depth. The SIHOO M57 lists “18.11 in (≈46 cm)”, the Branch Ergonomic Chair “18–22 in (≈46–56 cm)”. On the Branch chair you can move the seat pan to suit your thigh length; the M57 gives one depth only.

Warranty. The SIHOO M57 lists “3 years”, the Branch Ergonomic Chair “7 years”. The Branch chair's cover runs longer.

Maximum load. The SIHOO M57 lists “330 lb (≈150 kg)”, the Branch Ergonomic Chair “275 lb (≈125 kg)”. The M57 is rated for more weight.

Price. At regular US list prices the SIHOO M57 is $319.99 and the Branch Ergonomic Chair is $369–$389. The M57 lists about $50 below the Branch chair, before any store sale. Price options: the M57 — Black, Gray and White $319.99; the Branch chair — $369–$389 (Black/Black frame (low end) to colour upholstery with white frame (high end); single-unit price, excludes headrest add-on and bulk pricing).

Lumbar support. The SIHOO M57 lists “Dual-adjustable lumbar support (vertical and horizontal)”, the Branch Ergonomic Chair “Height-adjustable and removable lumbar rest”. The M57's lumbar adjusts in more ways than the Branch chair's.

Seat size. Seat height: the SIHOO M57 lists “≈18.1–21.7 in (46–55 cm)”, the Branch Ergonomic Chair “17–21 in (≈43–53 cm)”. Seat width: the SIHOO M57 lists “≈20.1 in (51 cm)”, the Branch Ergonomic Chair nothing.

Other details. Armrests: the SIHOO M57 lists “3D coordinated armrests (up and down, left and right, forward and backward)”, the Branch Ergonomic Chair “3D removable armrests; three-way adjustable (depth, height, width); Armrest height 26-29 in; armrest width 25-29 in”. Recline: the SIHOO M57 lists “Up to 126°”, the Branch Ergonomic Chair “Tilt range: 20°”. Chair weight: the SIHOO M57 lists “44.8 lb (≈20.3 kg)”, the Branch Ergonomic Chair “35 lb (≈16 kg)”.

Who should buy which

• Pick the M57 over the Branch chair if you want a headrest included in the price.
• Pick the M57 over the Branch chair if you want a higher weight rating: 330 lb (≈150 kg).
• Pick the M57 over the Branch chair if you want the lower price — the M57 lists about $50 below the Branch chair.
• Pick the Branch chair over the M57 if you want a seat you can slide forward or back, over a 18–22 in (≈46–56 cm) range.
• Pick the Branch chair over the M57 if you want a longer warranty (7 years).
• Pick the Branch chair over the M57 if you want a lighter chair to move around: 35 lb (≈16 kg) against 44.8 lb (≈20.3 kg).

Not published by the brand (M57 vs Branch chair): seat width for the Branch Ergonomic Chair.

Sources

• SIHOO M57 (compared here with the Branch chair): 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.
• Branch Ergonomic Chair (compared here with the M57): Ergonomic Chair | Ergonomic Office Chair | Branch; Branch Ergonomic Chair Product Spec Sheet (PDF), checked 2026-09-29; US list price from Branch US Store, checked 2026-09-29.
• Figures marked ≈ for the M57 and Branch chair are Chairpedia's unit conversions, not brand figures.