Magic Life Ergonomic Office Chair, Adjustable Home Desk Chair,Adjustable Lumbar Support with Thickened Cushion,3D Headrest & Comfortable Armrest Computer Chair4 Gear Adjustable: The chair can be adjusted to 90 degrees, 110 degrees, 120 degrees and 130 degrees, and locked in those angles. You can also adjust the reclining Angle of the seat according to your comfortable position. Definitely a home or office necessity! Ergonomic Office Chair: The double kidney and S shaped design of the backrest are more in line with the ergonomic design. The backrest is a structure that fits along the curve of the back, it