New dimensions chair : a world first at Orgatec 2018

Orgatec 2018 Halle 6, Stand B 093.  https://youtu.be/1rJZcLq1nBg

ONGO®Wing. The first office chair designed for use with height-adjustable tables offers an extended height range and an adaptable seat. 
The height from regular sitting to standing is achieved through two independently operated hydraulic lifts. The adaptable seat, from regular to saddle, is achieved through two foldable wings.
Named accordingly, ONGO®Wing opens up new dimensions in active sitting.

https://www.ongo.eu