To cover up fat rolls. It works very well.

http://tinyurl.com/s3thk

Me in psychodelic Shebeast Tank. As you can see, my waist and hip measurements are virtually the same. Whatever!!!

But try that Cabo tank- it's a looser fit. I love mine.

(Edited to fix spelling- and to add I even like _running_ in the Cabo tank- it's a great material.)