ALPS Mountaineering Slick Rock Sleeping Bag: 20 Degree Primaloft

I bought this as a way to lighten my load on overnight backpack trips with my scouts during the late spring, summer and early fall. I have used it from the Uinta Mountains of Utah to the slickrock canyons of the Dirty Devil. It's very compact and compresses smaller than the included stuff sack. It is reasonably light weight (especially for the $40 I paid on SAP), but it is nowhere near a 20 degree bag! I sleep warm to begin with and I had some chills on a 35 degree night. The temp rating is more of a survival rating...add 10 to 15 degrees for a comfort rating. I will be keeping it, though, for an all around light weight bag I don't mind trashing a bit on trips.

This is a good bag, but I'm not sure I would rate it as a 20 degree. I have used it as cold as 15 degrees (outside the tent) with good success, but my feet tend to be a little cold if it dips below freezing. This is a good bag for someone looking for a small and relatively light synthetic bag, but this is not the bag I would use to push the limits, it is really only comfortable to about 30 degrees. In the past I had heard some complaints about the durability of ALPS products, but this bag seems to stand up! All in all I would give this bag 3.5 to 4 out of 5 stars.

Firstly, this bag is more like a 30 degree bag. I don't mind, though, because it compresses smaller than advertised (roughly 8x12) and performs well in temps above 25 or so. If you're in the market for a 3-season bag, this one is probably the best value you'll find.

Seems to work well into the mid-upper 20's. Compresses smaller than advertised. I can easily get it to about 8x12 in the stuff sack it came with. This will be great for 3 season backpacking.