Your usual size will fit as expected, but go up 1 size if you plan to utilize most of the pockets without looking like you are wearing a snowsuit!.  The pockets are great and can hold everything you could possibly need for travel or trek. The sleeves are perfect length for anyone, as they easily roll up to fit. The zipper all the way over your face is very odd. I cannot imagine anyone wearing it or being able to breathe thru it, but you can roll it back onto itself for a nice warm hood that stays put.