Summary: Ordered this bag for a 3 season sleeping bag. I do sometimes spend time in areas where it will get well below 30 at night, but I am also a hot sleeper. I must say this is a high quality bag for the price. I am a big dude and ordered the long and wide version of the bag.
Excerpt: this is a steal, honestly I've used it in july with quite warm nights and in late september in nights as cold as 4 degrees C (sorry I'm canadian) and I've always slept well, in the cold my face was freezing but my body was very comfortable, its quite compact too (not the most compact out there, but...
Summary: Camped for two nights in the woods near Mt. Hood this past weekend. Temps were in the mid 50's the first night and the high 40's to very low 50's the second night. I was comfy both nights. I LOVE how you can unzip both sides to fold it down like a real blanket.
Summary: Interestingly, it's not rated as low for survival as my girlfriend's marmot 30 women's bag. And I've only used this for rather hot camping (60 or so low, 80 high) and it's worked just fine. Enough room to move in if you want, snug enough if you don't.
Summary: I have had this bag for years and I enjoy it on car camping trips thoroughly. It handles the weather of South Carolina nights perfectly and in 7 years of using this bag, I have never once been cold. My only complaint is that I find it too heavy for the ultralight backpacking that I am doing now.
Summary: I have used this bag three times since purchasing it. I have used it for car camping and backpacking and I consider it a good bag for either purpose. The only complaint I have is the zipper can be tricky to zip while laying in the bag.
Summary: I've had this for a couple of years now, using it in higher altitude backpacking in the Idaho hinterlands. The bag is not ultralight, but packs down like one. It fits into the bag receptacle in my Gregory pack easily--with room to spare. Sleeping room is adequate for a larger build.
Summary: I took this bag to the Ofeefenokee in early March. Very cold the first night and moderately cool the next two nights. The bag was good for all three nights. It packs well and did exactly what I needed it to do.