Initially bought the LARGE size, as I wear large/XL in most things, and sometimes a LARGE is a bit more tight fitting than I prefer. Well...the LARGE of this is massive. Closer to a XXL in every other brand I own. Substantially larger than an XL jacket from Calvin Klein. Returned and got a medium. I dont own a single clothing item that is a medium because it is far too small for me. This though, the medium is STILL too big. Not returning it again though for I fear a small might be too small...so I will deal with a slightly too large medium. Good quality item otherwise. warm, comfortable, and looks good.