May show other minor signs of wear from storage.n--SIHOO home office chair with adaptive elastic lumbar support can automatically provide support strength according to weight and contact angle. The S-shaped backrest design mimics the human spine, fits the curve of the spine, fully supports the back. It will be the best choice to protect your spine from the pain and fatigue of sitting for a long time.n--The feature of this ergonomic office chair is that the backrest can be adjusted up 6 cm according to your personal height and sitting posture, effectively solving the inconvenience caused by the height difference. The 3D PU armrest can be adjusted up and down in 5 gears, and the armrest surface can also be moved back and forth, left and right, which is very suitable for relaxing your arms. The inclined backrest angle is 103u00B0-113u00B0-123u00B0.n--The seat shell is made of .