compression shirts???
they work effectively as if u wear them under clothing u'r regular, they contribute correct posture and make the body look more beautiful? lol not gay ... but they have back pain from time to time ... want to wear support ... is that so bad idea under clothing, how does that make me weird?
they are more for training, because they are resistant to sweat, but yes, they conform to the shape of your body if you have the correct size.
Incline Chest Flies on Stability Ball Swiss Dumbbell Pec Fly