They have the property of expanding and becoming relatively more rigid when heated, keeping in mind that we're talking about foam rubber here, which is none too hard to begin with.
An Australian has hit on the idea of incorporating this stuff into bras, which will custom mold to whatever shape is put into them, and by expanding with temperature rise, becomes a push-up with excitement or sport bra with exercise.
The bra boosts the cleavage when it detects a rise in body temperature, said Nielsen.Such as when a woman gets a little flushed when she gets excited. It can kind of do some of the flirting for you," he said.Get the whole story here.
Moreover, if a woman is exercising and it detects a rise in body temperature, it can expand to offer more support when needed," he added.
Somehow I have a vision of this thing causing a B-cup girl to seem to grow to a C-cup upon spotting a nice piece of beefcake walking into the room.