A drafting-height chair, for counters, drawing tables, workbenches and sit-stand desks left at perching height, where an ordinary office chair leaves you several inches too low. The pneumatic lift covers the taller range and a built-in foot ring gives your feet somewhere solid at that height, which is what stops the legs dangling and the thighs taking all the weight.
A breathable mesh back on a bracket that moves up and down to meet your spine, over a thickly padded seat. Armless on purpose, so it slides right under a work surface. The most specialised chair in the range — if your desk is a normal desk, one of the others will suit you better.
