I have struggled with years wearing and discarding bras that do not properly conceal.  With these concealers, I can wear my favorite non-padded bras with confidence.  There is absolutely no show, whatever the weather is!  I have also tried these in hot, humid weather and it does stick to the body, but not uncomfortably so and not hard to take off either.  These are really very comfortable to wear.  I'll be buying a second pair for backup.