Adjustable head restraint allows the neck to lean easily and comfortably, adjustable lumbar support bracket for free adjustment of height depth, 3D adjustable armrest for different office applications, 90°-120° arbitrary backrest adjustment for multiple work positions, any switch 10cm lift, 360 ° Freedom to rotate f

• Adjustable head restraint allows the neck to lean easily and comfortably, adjustable lumbar support bracket for free adjustment of height depth, 3D adjustable armrest for different office applications, 90¬∞-120¬∞ arbitrary backrest adjustment for multiple work positions, any switch 10cm lift, 360 ¬∞ Freedom to rotate freely 3D handrail.

• SIHOO is recommended by Ergonomics Application Association. SIHOO's ergonomic design is based on the human body dynamic digital model. The ridge backrest and the human spine are exactly the same. The close fitting helps release the spinal pressure. The flow waterfall arc seating design Thigh support is comfortable, SIHOO will make you more comfortable

• The aluminium base is steady and durable,having good bearing quality. The silent castors move freely without noise. Double-back-frame design is steady and durable.

• SIHOO is the crystallization of the common wisdom of many professionals in human body, physiologist, product designer, mechanical engineerÔºådoes its best to make every step comfortable and safe for every customer. Every small part has strict safety quality testing. Cushion impact test, handrail fatigue test, chair foot static pressure test, in line with the strict standards of office chairs.

Adjustable head restraint allows the neck to lean easily and comfortably, adjustable lumbar support bracket for free adjustment of height depth, 3D adjustable armrest for different office applications, 90°-120° arbitrary backrest adjustment for multiple work positions, any switch 10cm lift, 360 ° Freedom to rotate freely 3D handrail. SIHOO is recommended by Ergonomics Application Association. SIHOO's ergonomic design is based on the human body dynamic digital model. The ridge backrest and the human spine are exactly the same. The close fitting helps release the spinal pressure. The flow waterfall arc seating design Thigh support is comfortable, SIHOO will make you more comfortable The aluminium base is steady and durable,having good bearing quality. The silent castors move freely without noise. Double-back-frame design is steady and durable. SIHOO is the crystallization of the common wisdom of many professionals in human body, physiologist, product designer, mechanical engineer，does its best to make every step comfortable and safe for every customer. Every small part has strict safety quality testing. Cushion impact test, handrail fatigue test, chair foot static pressure test, in line with the strict standards of office chairs.

The M57 series is an improved version of the M18 series.The biggest change of the M57 is that the seat cushion uses a PE polyester mesh, so it is not

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