I wear 3xl in Under Armour. The reason I choose this size is because I'm not really a 3xl, more like a 2xl 1/2 or 3/4. All other companies make their 2xl a bit short for me and 3xl wide on the side. Under the armor the 3xl is long and sits comfortably on the sides and the shirt doesn't make me look like a kick ass. The reason I like this sweatshirt is that I took some off and it fits well. not for too long and don't hug my stomach. However, I noticed that 3xl fits less. If I hadn't lost weight the way I did, my stomach would be hanging over the bottom and looking awful. So if you normally wear 3xl under armor and the shirt isn't long I would suggest 4xl. This 3xl looks more like a 2xl but is slightly wider on the sides.
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