(Reviewer; Upper-med chest size)
Need a binder to exercise in, but don't want to ruin the ones you've got (or pass out) - then here you go.
That rarest of all things, a binder you can get on and off. Easy enough to wash without it rolling too.
While it's pretty good, it's not going to be a miracle worker, it'll work as well as a normal binder (but feels more breathable) and no more, so if you've got a larger chest, I'd invest in a swim shirt/rash guard too. Then you'll be grand.
As a word of warning, if you're between sizes on this one, I'd definitely go up (which we all know we should do, but sometimes don't), especially if your stomach usually gets compression from a binder too. The compression on your chest'll be about the same, but you'll be able to breathe freely and not end up having stomach pains and problems from it being squeezed down too much.
If you're not sure about the size when you get it, remember you'll be /exercising/ in this thing, looking good is one thing, passing out another - stay on the safe side.