Office chairs have been certified by Bifma and SGS and have passed the static pressure test of 1136 kg. Dr chair can support a weight of up to 150 kg and the seat cushion, which is made of a whole sponge covered with mesh, is durable and can be used for a long time. Multi-dimensional free rotating headrest protect the cervical vertebrae, adjustable arms with PU, 10 cm height adjustable gas lift and 360° rotation are flexible and suitable for your office environment. The tilt function with position lock and 120 ° back adjustment is ready for your office recovery. With the W-shaped design, you can always sit in the middle of the chair and get the support you need from the backrest. The front edge of the seat looks like a waterfall and reduces pressure on the thighs as much as possible when sitting. Ergonomic design is based on the human dynamic digital model. You can also adjust the seat height and flexibly position the backrest and armrests that best suit your posture. Anyone can even install this chair in a few steps with the manual.