Four upholstery details:
contour back
contour back with slim pad attachment
fully-upholstered slim back
fully-upholstered border back

Three back heights: low mid high

Synchronized knee-tilt mechanism allows seat back
to seat pan movement in 2:1 ratio.
Forward-tilt lock-out option disengages forward-tilt
position when chair is at rest.
Anti-catapult 5-position lock accommodates all postures from intense work to more relaxed meetings.

Five arm variations:
adjustable height and width with urethane cap
adjustable height and width with upholstered cap
arc arm
arc arm with upholstered cap
arc arm fully upholstered

Three seat depths Two seat widths
Two shell colors: black and warm grey
Enhanced lumbar support Waterfall seat
Fingertip controls replaceable upholstery covers

tom's functions

pneumatic seat height adjustment
back height adjustment arm height adjustment
arm width adjustment tilt tension adjustment
tilt lock forward tilt lock-out