MEC Swan Super GTX

I bought this bag five years ago. I've only been chilled when I've fallen asleep with the hood open. Coldest night -10F. With the bag closed up, not one cold night. Great shoulder yoke. Excellent quality materials and construction. The fit is super too (not restricting and nothing excessive). The zipper isn't as snag proof as I'd like. The Gore-tex shell cuts radiant heat loss but makes venting the vapor necessary on occassion. Usually, I'm too hot in this bag (even on the coldest nights). If I need another bag, there is no doubt I'll buy a MEC bag.