I foolishly bought on sale two northface synthetic bags, weights seemed good, the Lynx and the orion, I think, rated at 40 degrees and 20 degrees respectively. Those ratings are not even remotely close to reality, could easily be 15 degrees off. The orion which even the sales guy at their outlet tried to steer me away from, I doubt is more than a 35 degree bag, at best, judging by its (lack of) loft. I should have checked the loft, but ordered the Lynx online trusting my reasonably good experiences with 1990s era northface gear. Northface used to be good, I have an old Cats Meow 20 degree, heavy but honestly rated at least. I could feel the Lynx fade out at around 50 to 55 degrees on a recent trip, and when it dropped below 50, I was having to start wearing clothes to keep warm enough. Fraud? I think so, especially given that Northface has sold properly rated bags not so long ago in their history.
I assume their other bags are as bad.