What are the 7 key adjustments on an ergonomic chair?

The 7 key adjustments on a full-featured ergonomic chair are: (1) Seat height (15"–21" pneumatic range); (2) Seat depth (seat pan slide, 2"–4" travel); (3) Seat tilt angle (forward/rearward); (4) Backrest height (up/down position); (5) Backrest recline angle; (6) Lumbar support height and depth; and (7) Armrest adjustments (height, width, pivot, depth). A headrest is sometimes listed as an 8th. At OfficeFurniture2go.com, our ergonomic chair specs list every adjustment available — call 1-800-460-0858.