The tank works--it made my back look completely smooth. I could even wear a bra underneath it and the back would still look pretty smooth. The downside is that the tank completely squashes your boobs. I have a nice sized rack but after putting this on I felt like I had entered the realm of A-cups (I am exaggerating a bit but it looked and felt like my chest was bound).

I decided to keep it and I figure I will wear a padded Victoria Secret bra that has been languishing in my drawer since it is so overpadded. Hopefully, the padding will be enough to make my chest look a bit closer to its normal size.