SIHOO Ergonomic Office Chair Doro C300 A3 Computer Desk Chair High-Back Mesh Chair with 3D Linkage Armrests & 4-Position Adjustable Backrest for Wide Seat for Big and Tall-300lbs-Black

【Innovative Ergonomic Chair】The SIHOO Doro C300 ergonomic office chair integrates the most recent technology to provide you with continuous support in the neck, lumbar, leg, and hand regions. It is furnished with an adjustable wide angle headrest, adaptive lumbar support, 3D linkage armrest, an intelligent weight-sensing device, durable and silent chair wheels, a flexible backrest, and breathable mesh fabric, offering prolonged comfort even if you remain seated throughout the day. 【Domino Auto-Adaptive Lumbar Support】The backrest employs an innovative dynamic tracking system that automatically adjusts the backrest to conform to your back as you shift your upper body, providing you with full support at all times. Additionally, the backrest of the home high-back office chair has four adjustable heights and can move vertically by 2.36 inches, suiting individuals of varying heights. 【3D Linkage Armrests】The office chair’s three-dimensional armrests can be adjusted in three directions not only adjust up and down, back and forth, and pivot 75, but also coordinate with the seatback when reclining, ideal for resting your arms in various positions while working. When you shift your body while sitting on the SIHOO Doro C300 Computer Chair, the Adaptive Lumbar Support will automatically follow your body and fit your lumbar area, effectively alleviating back pain and safeguarding your health. 【Height-Adjustable Backrest】Moves vertically in 4 levels to suit your back(1/2/3/4st gear). The SIHOO Doro C300 can be tilted at 110°, 120°, and 130°, allowing you to relax and rest comfortably. Furthermore, this office chair is equipped with an intelligent weight-sensing device that adapts to the user’s weight while ensuring an effortless and balanced reclining experience. 【Trust Worthy Quality】The SIHOO Doro C300 ergonomic office chair holds 12 patents, passes the European Union’s REACH and EN1335 standards, and has received safety and quality certification from the German TUV. Our ergonomic office chair also complies with the US SGS BIFMA standard and is outfitted with an SGS-certified 4-stage pneumatic lift for enhanced durability and safety. 【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.