Excustive office chair with headrest and 2D armrest, chase back function with 7 gears adjustment, ti

1. High back breathable mesh chair, wide headrest, mesh imported from Germany, elastic and breathable. 2. Ergonomic principle,BACK HEIGHT ADJUSTMENT This ergonomic chair control chairback height. double back provide better support, it can be adjusted in 7 gears.Lifting chairback with two hands directly when sitting. Lift each gear quickly to find a suitable height meeting your waist and back. Lifting to maximum height then go to lowest height in a sudden. It makes lumbar support to meet lumbar curve properly, it works more comfortably. 3. The 2D armrest can be adjusted up and down to a height of 3.93inch. 4. Tilt tension function: 4 gears locked, and the maximum tilt angle is 128 °. 5. Shaped Cushion, seat cushion is 20W * 20D inch, shaped cotton will bring comfortable sit feeling , and not tired after sitting for a long time. Long term use will not cause deformation and collapse of the cushion shape. 6. It has passed the BIFMA test and has the certificate issued by BV. 7.Max loaded :300lbs.