SIHOO M57 Ergonomic Office Chair with Adjustable Armrests, Lumbar Support, and Headrest (Black)

About this item

• 【Features】SIHOO ergonomic chair with adjustable headrest can make neck tilt easily and comfortably, adjustable lumbar support bracket for free adjustment of height depth, 3D adjustable armrest for different office applications, 90°-126° arbitrary backrest adjustment for multiple work positions, any switch 3.15 in lift, 360 ° Freedom to rotate freely 3D handrail.
• 【Material】Our home office desk chair aluminum base is stable and durable, bearing quality is good. Silent casters move freely without noise. Double back frame design, stable and durable.
• 【Product Warranty】The warranty for this product lasts for three years. In the event of any quality issues, please get in touch with us. We will replace the accessory after verification. Rest assured, we are committed to supplying you with replacement product accessories at no additional cost within the three-year warranty period.
• 【Design】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 chair.
• 【Ergonomic design】SIHOO ergonomic office chair 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.