There are d-rings on the side which don't really serve a purpose other than to look fun. Go Go Gadget Funny Face.
I was at this film festival awards thingie yesterday and everyone who won got a t-shirt. I love free shirts, especially when they are super comfy like these are. Unfortunatly, all the sizes were huge, including the small so I had to take it in a bit.
A side by side comparison, I didn't get more than one but I accepted them for a few people who weren't there: