I'm 5'3" and this chair's mesh design is offers great lumbar support at my computer. The blue foam color is so pretty! The seat is rock hard (much more so out of the box than on the store model). I will use a gel cushion for prolonged sitting. Leave the arms off as they are ugly and don't really serve a good purpose. I'm able to reposition much more easily without them and the chair pushes all the way into the desk. The brand is obviously a play on Humanscale but the name is where any similarity ends. I have one of each and this serves its purpose fine.
This chair suits both myself and my partner even though we are very different body sizes. I like the adjustments for height and lumbar support. I think that the mesh back fabric will be wonderful in the hot weather. I recommend this chair.