If you have any muscles, this is the shirt to pick up. It is essentially a muscle shirt with collars and cuffs that buttons up. I wear this one out to the club where there is often a mix of casual and dressy. If you want to show off your muscles in a shirt that's not so obvious about it, this is the one. The shape of the dual tone enhances chest muscles and gives a slimming effect, making it even that much more suited to those who work out.