Like EVERYONE else in here, I was disappointed with the size.
I am 6' and 200 lbs, i.e. not enormous. I ordered an XL. Body of the jacket barely cleared my waist, and the SLEEVES?! Man I dunno who designed this thing. The sleeves came to my mid forearm. I'm not talking a little, annoying gap of skin between my glove and the end of the sleeve, I'm talking like comically short sleeves, to the point that it looked silly on me.
Also, it's pretty thin insulation-wise.
If you're a dude with exceptionally short arms, go for it. It is, after all, a decent price for a low-loft down jacket (that is, ONLY if on sale at $80 -- at full price this is a rip off no matter how you slice it). But otherwise I'd say skip it.
And Mountain Hardware: Step your sizing game up!