Sihoo M57 PRO Ergonomic Office Chair, Computer & Gaming Desk Chair — 4D Adjustable High-Back, Breathable Mesh, Dynamic Lumbar Support
Key Features:
Level-up your seating with a double-joint flexible headrest for custom neck relief; a 4-position integrated S-curve backrest that mirrors your spine; height- & depth-adjustable lumbar support in high-polymer elastomer; 4D linkage armrests (up / down, in / out, fore / aft, 360° pivot); plus an auto-balance mechanism offering a silky-smooth recline from 90°–130° with three lockable angles. Seat height adjusts through 10 cm of travel to suit every workstation.
High quality & easy assembly: Tested to BIFMA × SGS standards and cleared a 2,000 lb static-pressure trial—so it’s rock-solid up to 130 kg. Each chair ships with clear, eight-step instructions; you’ll have it bolted together in about 15 minutes.
For long stints at the screen: Breathable PE + polyester mesh keeps air circulating, meaning no sticky back even on sweltering summer days. The hard-wearing weave resists sagging or fraying, so eight-hour sessions are a breeze and maintenance is as simple as a gentle warm-wash rinse.
Premium materials: Aerospace-grade aluminium alloy base pairs with silent, floor-friendly castors for effortless glide. The reinforced PP + fibre dual-back frame stays rigid under load, while PU-topped armrests wipe clean in seconds.
Specifications:
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Headrest
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Double-Joint Flexible Headrest
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Mechanism
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Auto-blance mechanism with 3-position lock.
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Mesh material
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Breathable PE+polyester mesh
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Suspension System
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/
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Waterfall-shapedseat cushion
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Breathable Mesh Seat Cushion
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Lumbar support
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Height & Horizontal Adjustable Lumbar Support
Integrated S-shape Backrest |
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Armrests
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4D Linkage Armrests.
Armrest Outer Width :67cm |
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Seat height
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42-50cm
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Seat width
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50cm
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Seat depth
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45cm
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Overall height
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Height: 105-131cm
Width: 73cm Depth: 72cm |
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Recline angle
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109°, 122°, or 134
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Net weight
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20.20 kg (44.53 lb)
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Max Recommended Weight
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136 kg (300 lb)
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Recommended user height range
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150 - 180 cm (5' - 5'11")
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