ING
ing is a combination of two levels of mechanics, to follow any movement of the body from forward lean, backward inclination, left and right twist. A mechanism like a swing that does not use a spring eliminates the load at the beginning of movement and makes the body easy to move. Furthermore, since there is a lumbar return after moving, you can safely leave your body in the chair without breaking the balance.
360 ° gliding naturally creates the S-shaped curve of the backbone, there is no lumbar support on the backrest. The backbone can be released more and the correct posture can be kept comfortably.