“Befuddled by small size”

“I'm befuddled by comments that call this item large. I am 5'6", 115 lbs, and recently ordered another ExOfficio item in a medium. It was ENORMOUS and came down to my mid thighs (it was a sweatshirt). SO when I ordered this item, I ordered small, being gun-shy from the prior order. It's too short, the thumb holes and sleeves aren't long enough. I don't know if reading other people's ratings is always the best way to go, particularly when certain brands fluctuate so much in size.”