I'm one of those that is blessed with a top heavy figure.  Trying to do cardio or workout or anything of the sort, just ended up being painful.  Regular sportsbras, no matter how EXTREME they claim to be, did nothing but make it appear that I had one large boob right in the middle of my chest.  After searching and trying many different products, I finally ran across this one.  The price wasn't outrageous, the looks were that of a normal sportsbra.  I took a chance and I'm glad I did.  It's comfortable, it has FULL SUPPORT, I can workout and not be in pain from the bouncing, or embarassed by it.  I now own two.  Highly recommended.