SIHOO M59AS Office Chair Desk Chair 3D Armrest 3D Headrest Automatic Adaptive Lumbar Support Rocking M59AS Flip-up Approx. 120° (Gray)

``Ergonomic chair'' SIHOO has been researching ergonomics and people's sitting posture for over 10 years, and has developed an ergonomic chair that does not cause fatigue even when sitting for long periods of time. This office chair is based on our M76 series and has been completely upgraded from M76A. The chair has a 3D headrest with two adjustable joints, allowing you to adjust the height and angle to suit you and fully support your head and neck. The chair adopts a high-quality mesh frame, which has excellent ventilation and maximum flexibility, and perfectly fits the curve of your hips and back, making it less tiring and comfortable to support even when sitting for long periods of time, and significantly reducing back fatigue and pain. "Taller and wider backrest & convenient hanger included" The backrest of the chair is higher and wider than the M76 series backrest, providing more support for your back. The back of the chair curves around your body to relieve back pain. The auto-adaptive lumbar support adapts to your body, allowing you to sit for long periods of time without straining your lower back. There is a durable hanger on the back of the chair, which is very convenient for hanging coats, cold weather gear, backpacks, etc. "3D interlocking flip-up armrest & approximately 120 degree rocking" The office chair has a flip-up armrest and is designed to rotate 90 degrees, allowing you to create a comfortable and free work space. If necessary, you can lower the armrest to support your elbows and feel comfortable while talking on your phone, reading a book, or just relaxing. By pulling up the armrest when not in use, you can store it neatly regardless of the desk height, saving approximately 0.6 square meters of space and making effective use of the space in your room. The desk chair can be rocked approximately 120 degrees, allowing you to relax during long hours of work or study, and change your mood when you feel a little tired. It can be used in a wide variety of places, such as your room, study, office, conference room, reception room, etc. ``High-performance mesh material & silent casters that won't scratch the floor'' The seat of the office chair is made of high-performance mesh and is highly breathable.Furthermore, it is designed to fit the curve of your buttocks, gently cradling your buttocks and thighs, and better dispersing body pressure, so you won't feel pain in your buttocks even after sitting for a long time. The office chair uses silent PU casters, which makes it move quietly and prevents scratches on the floor. "Safety Certification / 3 Year Quality Guarantee" SIHOO office chair is certified by American BIFMA standards and has passed all tests including [backrest strength test] [seat impact test] [caster durability test] [leg strength test]. Equipped with a gas sill that is certified by the SGS certification inspection agency, ensuring durability and safety. From the date of purchase, SIHOO's desk chair comes with a 3-year quality guarantee from the date of purchase. If you have any defects or problems with the product you have purchased, or if you have any questions, please feel free to contact us at any time so that our customers can use our products with peace of mind for many years to come. SIHOO M59AS Office Chair, Desk Chair, 3D Flip-up Armrest, 3D Headrest, Automatically Adaptive Lumbar Support, Approx. 120° Rocking, 360° Rotation, Lift Up and Down, Ergonomic Chair, Telework, No Fatigue, Breathable, Home Work, Study