SIHOO Doro C300 Ergonomic Office Chair with Ultra Soft 3D Armrests Black Pack of 1

【Safety certification】SIHOO A3 office chair has passed the American BIFMA specification and German TUV product safety certification, [backrest strength test] [seat surface impact test] [caster durability test] [leg strength test] and all other tests. Equipped with SGS Class 4 cylinders certified by SGS, ensuring durability and safety. SIHOO's tables and chairs come with a three-year warranty from the date of purchase. For your peace of mind, please feel free to contact us if there are any defects, deficiencies or uncertainties in the product you are purchasing. 【Intelligent gravity mechanism・Automatic adjustment function】If it is the tilt function of the ergonomic chair, it is the key construction component. SIHOO's newest chair features an intelligent gravity mechanism with weight-adjustable resilience, making it easy to operate at any weight. It has a 2-step auto-adjustment function and can be tilted to a maximum of 20 degrees from 92 degrees - 100 degrees - 112 degrees. Place your body on the back of the chair and enjoy a comfortable rocking motion. Or tilt it up to 112 degrees between work sessions for a short break and relaxation!. 【Domino auto-adaptive lumbar support and 3D linkage armrest】The SIHOO A3 office chair features a 3D automatic macro-adjustable headrest that can be adjusted 4.5cm up and down, 6.5cm back and forth and 20° angle. Made of soft mesh material, it is designed with the latest triangular soft elastic frame with triangular support straps from the shoulders to the lumbar area on both sides to support the back. The 4-position adjustable 6cm liftable backrest is suitable for people of all heights. When the backrest is adjusted to the highest level, it automatically reverts to 1 level. 【Wide Angle Adjustable Headrest and Trackable Backrest】The SIHOO A3 office chair features a 3D headrest with automatic macro adjustment, which can be adjusted 4.5cm up and down, 6.5cm back and forth and 20° angle. Made of soft mesh material, it is designed with the latest triangular soft elastic frame with triangular support straps from the shoulders to the lumbar area on both sides to support the back. The 4-position adjustable 6cm liftable backrest is suitable for people of all heights. When the backrest is adjusted to the highest level, it automatically reverts to 1 level. 【Innovative Ergonomic Chair】SIHOO's latest office chair has been developed using the latest technology to provide comfortable sitting while maintaining the correct posture for a healthy lifestyle. The ergonomic chair features an automatically adjustable 3D headrest, automatically adjustable lumbar support, linked 3D armrests, intelligent gravity structure and automatic adjustment. Following the concept of a "chair that sits on your body", the soft backrest and breathable mesh seat design provide a comfortable sitting experience, even after long hours of sitting.