Love, love this chair!  It has super lumbar support which is vital to me.  I wanted a desk chair that I would not feel “hot” sitting in it and this is it.  The back is a strong mesh and the seat and arms are an open type weave also.  I don’t over heat when working!  I like the way the arms tip up and out of the way.  The height is also adjustable which is great since I am short and can raise the chair to the appropriate height.  This is definitely a GREAT desktask chair!