I went with a Large despite having very similar height, chest and waist measurements to the models because I prefer a more oversized, relaxed fit and wanted enough room through the shoulders and arms to layer it over larger hoodies without feeling restricted. The jacket is still quite short on me, so I'm glad I sized up rather than going for the Medium, which I was worried might feel too small in the sleeves or ride up when zipped. The Large gives me the extra room I was looking for without looking excessively oversized, and I really like the camo pattern too; it's subtle enough to not be overwhelming, but still adds a really nice look to the jacket. One funny thing I noticed is that the zipper is on the “girls' side” compared with what I'm used to, but that's obviously just something you get used to. I'm really happy with it.