No it definitely runs small. I would size up, mine is a Medium and it's a little tight on me. When he goes to the Cosmopolitan hotel, there is like a mini-mall on the bottom two floors and a fancy glass elevator in the middle of this circular open area. He should go to the second floor, that's where the store is. There is more than one Cosmopolitan gift shop so I hope that helps him find it!Do you feel it’s tts? One of my coworkers is in Vegas this weekend and I asked him to get me one.