SIHOO® M57 Ergonomic Office Chair, Computer Desk Chair, 3D Adjustable High-Back, Breathable Skin-Friendly Mesh with Armrest, Lumbar Support (Grey)

★ 【Features】SIHOO ergonomic chair with adjustable headrest can make neck tilt easily and comfortably, adjustable lumbar improve bracket for free adjustment of height depth, 3D adjustable armrest for different office applications, 90°-126° arbitrary backrest adjustment for a couple of work positions, any switch 3.15 in lift, 360 ° Freedom to rotate freely 3D handrail.
★ 【Ergonomic design】SIHOO ergonomic office chair is beneficial 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 waft waterfall arc seating design Thigh improve 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.
★ 【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 Each and every step comfortable and secure for Each and every customer. Each and every small part has strict safety quality testing. Cushion affect test, handrail fatigue test, chair foot static pressure test, consistent with the strict standards of office chair.
★ 【Warranty】Product warranty period is three years. If there is any quality problem, please contact us. After confirming, we will be able to change the accessory for you. We promise to will give you zero profit product accessories within three years of the warranty period.