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

About this item

• 【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.
• 【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.
• 【Warranty】Product warranty period is three years. If there is any quality problem, please contact us. After confirming, we will change the accessory for you. We promise to provide you with zero profit product accessories within three years of the warranty period.
• 【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.
• 【Design】SIHOO is the result of collaboration among a team of experts in various fields such as human anatomy, physiology, product design, and mechanical engineering. The goal is to ensure each step taken by every customer is both comfortable and safe. Rigorous safety and quality tests are conducted on every small component, including cushion impact, handrail fatigue, and chair foot static pressure tests, all meeting the high standards set for office chairs.