i ordered this jacket in large. i'm 5'10" and about 155 lbs, so according to their sizing i should have gotten either a large or a medium. it wouldn't have mattered if i'd gotten the medium - this jacket is gigantic. i weighed myself with the jacket off and then with it on, and it weighs a full 5 pounds. it seems to be a pretty nice jacket otherwise, but unless you're a really big and tall person, you'll look dumb in this jacket.