Pneumatic Seat Height
-Adjusts “up and down” seat height relative to the floor.
-Places the "pivot point" directly above the base center and allows the user to lean back in a seatead position.
-Allows user to adjust “resistance” with which chair reclines or tilts.
-Allows user to select and "lock a particular back angle."
Sliding Seat with Lock
-Allows seat to move "forward and backwards" or to be locked in a desired position.