I’m normally a larger in jackets/shirts and I went up a size to XL so that way I would have a little wiggle room and the jacket is still to small in the stomach/waist area, I had a hard time trying to zip it up. If you have a little pudge definitely size up or two. The only thing that I particularly don’t care about on this jacket is how long the sleeves are, they cover majority of your hand if your gonna use the thumb holes.But overall the jacket fits good and it’s comfy.