Boxy and Strange Fit
I'm 5'1", 105lbs and I bought an XS. Although some reviews said that the jacket is short-waisted, I didn't think it would be a problem because I'm petite. The material of the jacket is great (I tested a sleeve under the faucet and water slid right off); however, the construction isn't right for my body type. It was big for a XS and quite boxy--not at all fitted like the picture shows. There was more than enough room for a tank and sweatshirt underneath. Also, the hem of the jacket reached my hips, but I prefer my jackets to hit about 2" lower than that; I can see the short length being a problem when snowboarding.
I'm returning this jacket because of the fit (which is such a shame), but I was very happy with backcountry's speedy shipping.