It does feel as if it would cool in hot weather which we haven't had yet. Problem for me is it has zero support. I thought foam cups meant it was a contour bra. It's not. It's got a very thin layer of something in the cup that hides absolutely nothing. It is comfortable though so I can wear it around the house, but I could never go out in it.

Worst problem for me is that it arrived smelling like a glade plug-in or bug spray. I had to air it out on the porch for three weeks before the smell dissipated. When I decided to keep it I washed it and it still has a faint odor. I would assume that's seller's fault for storing improperly but another reviewer complained about same thing..