On the chairs REAL 2000, 6100 and 9000 we have developed the seatsystem ERGOMEDIC. The system is now standard and consists of three parts working togehter: seat-, back- and armsupport.
To further increase the sitting comfort of the chairs the system ERGOMEDIC PLUS has been developed. The system consists of four cooperative parts: seat, backrest, neck- and armsupport.
Carolina Dimitrov leg. physiotherapist has taken a test that measures how the seat angle affects the pressure on the butt.
See a movie about this here.