Have you ever gone for a tan at the beach and came back glowing from the sun but left with unwated tan lines? And when the occasion comes to dress up in a stunning bare-backed top/gown, those hideous tan lines ruined them all. If only someone would come up with a sort of material for swimwear that allows the rays of the sun to penetrate it yet prevent the harmful ultraviolet rays from entering. So one can troop down to the beach and get a tan with no worries of getting skin cancer nor an...