Not sure why some are saying the sizing is too large, but I'm 5'9" and 185 athletic pounds and the medium fits me well.  It's not a slim form fitting sweatshirt but the standard baggy, comfortable, and lounging around type.  Though many men do wear these to go out and about as well.  I believe these are midweight category sweats.

I ordered the Royal blue and cardinal...I love the Royal Blue.  Strangely, there does seem be be a bit of variance in the 2 shirts I ordered.  As the maroon's hem is either larger or slightly more stretchy while the Royal Blue is tighter or less stretchy.  Either way I notice it when I wear the 2.  It's enough so that I have to put on and take off the 2 shirts differently.  The maroon, the standard stretch on, lift off and stretch from bottom to take back off....BUT the Royal blue, I have to take on the same way I take off, which is basically like backing up a car...I have to remove the shirt from the neck hole, pulling up and off of me...I can't stretch it out from the bottom hem and stretch and lift off.

You may or may not encounter similar.