I couldn't find anyone here who knew anything about these. But found one youtube review. Kind of funny as the people seeing the video were pretty convinced this is just a guy with gynecomastia.
This is a nice shirt. More of a binder really and not at all like something like a under armour shirt or something. Looks like a normal undershirt. Unless you are very large or want a really flat look-- I don't as one I have sensory problems and another I just don't the totally flat look. Looks like I have very small pecs in a t-shirt. The material is very nice silky and soft on the skin. I could wear exercising I think--though I would not. Doesn't bind the stomach. These are $20 each and $56 for a 3 pack. They ship US mail which is kind of nice, if you are in the US. They ship very discretely in a little envelope. I'm going to get a 3 pack so I could wear to work. Bad thing, I don't think they would last long, but they they are cheap enough.... BTW, saw a review re: not getting them. Did not have any problems and got within a week or so.
They have other styles, like styles that flatten the stomach, v neck, and sleeved shirt styles.
I got a medium in the tank top gynecomastia ftm shirt, and wore a 36C and a medium sport's bra.
I'll try to do photos or at least comment after I wear.
web info here:
http://gc2compression.com/--Jay