I've been sleeping in this Coleman bag for weeks; it's comfy, roomy, washable, and warm . doubt if it would work just by itself in 25 degree weather, (what would?) but with an extra blanket thrown on top, probably would. Decent workmanship, zipper fine..(I;m not rough) and it's simply unusually soft, not slippery, and pleasant. It's wide enough to sleep in any position.