I’ve had this bag a year now. This is the first sleeping bag I’ve been able to get a good nights sleep in. I “have” to pull up my knees to sleep, this is the only bag I’ve found that will let me sleep on my side – pull up my knees and turn a lot without getting all twisted in the bag. It’s my lifesaver. I sleep cold but have not had an uncomfortable night yet with this bag. it’s super soft/comforting plenty of room and the elastic keeps the bag forming to me no matter what position I’m in.

Hey I also am a big fan of MontBell’s Super Stretch system. Just like you I sleep on my side(s) and like to bend my knees a bit. I have a different, older model but have comfortably pushed it way past its rating with a bit of layering. Anyway the stretch system lets me easily toss & roll and yet stays snug, which helps eliminate nasty cold air pockets.

Another satisfied Montbell Super Stretch owner. Again, with layering I have taken my #3 (35 degree rated) into the low 20’s many times. Gotta luv da stretch :>)

Allow me to push back. I tried a Mont Bell UL Super Stretch #3 (not the same bag as being reviewed here) which is rated to 30F. Used it two nights in the mid to high 30’s and froze. Only way I could tolerate it was with heavy wool socks, capilene pants, light wool T neck, Marmot Zeus down jacket and heavy wool cap.

Took it back and bought a Mont Bell UL SS #1 (15 degree).

I will agree that the bags are plush and the stretchy-thing, once you get used to it is nice. But I think their temp ratings are off (for me) by at least 10degrees.

Bob Frame,

The #3s and higher do not have the neck baffle which would seal in the heat. Just FYI.

Temp ratings on bags are highly personal. I have a Montbell Super Spiral Hugger #3 & #4 (both with the 800-loft down). I recently spent a very warm night in the #3 (rated to 30F) encased in a Soul Bivy under a tarp & on top of a neoair pad. Overnight temps were in the single digits, very breezy, but not really windy. I slept in my thin base layer along with WM down booties and was perfectly comfortable. I thoroughly warmed up & hydrated and had consumed hot food & drink before crawling into the bag. I’m not a “warm” sleeper, but I’ve found that what I do before I crawl in the bag almost as important as the bag itself.

I’ve got the 800 fill Montbell #2 Super light version, lighter fabric, not the super stretch – sold only in Japan. 24.5 ounces on my scale. One of my top 2 favorite bags (other is Phantom 32). Have had it in low 30’s rainy conditions (+Nemo Tensor pad) with thin base layer and kept quite warm. Typically I use it as a quilt, draped over me like a blanket, but warm either way. Good quality bag.

My all time fav tho was my Montbell #1 long – heavy at 34 ounces but man, what a warm and roomy bag! Too big for bikepacking tho, although I hate myself for selling it. Have had #3 and #5 as well – a bit too lightweight for my old bones.