It's super warm and I think it looks stylish. The faux trim easily comes off, which is a bonus option for me. For reference I'm 5' 7 1/2" tall and weigh 150 lbs. According to the size chart I was between med and large. I went with large in case I wanted to layer underneath. It feels a teeny big but I'm happy with my choice 'cause I'm pretty sure the med would have felt too small.
So far this jacket has been wonderful and a great find - the bonus being that it's from a Montreal company! The cold winter weather hasn't hit us yet, but so far the jacket has been very warm in -10C with just a cotton long-sleeve shirt underneath. The drawstring clasp isn't very strong, but a simple knot in the elastic cord to kept it clinched works. The only (very minor) downside is that the zipper isn't a two-way zipper, meaning that the bottom can't be opened to offer a bit more flexibility/room to stretch. However, the side hemlines are perfect and very flattering, making it feel and look less like the warm sleeping bag that it is.