I'm a size 10 woman and ordered a medium. The shirt fits fine-- sleeves are the right length, torso is a bit loose, and the hem hits slightly below the waist--but only if you're standing perfectly still and don't move. Whoever designed/sewed this must have done so on a dummy and never put it on a human being. The sleeves are sewn such that there is no extra fabric in the armpits, meaning that when you raise your arms even halfway up, the bottom of the shirt pulls up over your stomach.
The quality of the fabric is good, and the fact that it comes with pips makes it seem like it's a great deal. But considering I can't wear it out in public, it's not so great a deal. It's doomed to hang on the back of my closet door for the rest of its life (or until I finally give up and donate it to charity or something).