We were heading up the far North of Maine during the first week of October for some tent camping and I decided it was time to replace the two 15 year old bags we had been using. We zipped hem together as most people do. I wanted something that would be comfortable down to 25 degrees, not too heavy, had a rip-stop exterior instead of cloth and used modern insulators and fabrics. This Grizzly looked like a good choice so I took it with us. I wasn't disappointed. First of all it's a stuff bag. You easily can stuff it into the sack it's designed to fit. That sack, btw, is quite interesting. You have to see it to understand. But it really does the job so unpacking and packing this bag is a lot easier than having to unzip and roll up traditional bags. Then comes the way the bag is designed. First of all the zippers are gorgeous. Just nice and big and clunky so you won't damage them. Second is the 'seal' at the zippered sides. There are two "tubes" within the interior fabric that come together when the bag is zipped up that keep cold air from invading your bag as you move around. Very neat idea. Third is the large strip of Velcro at the very top. How many times has your bag unzipped at night as you move around? With this Velcro strip, that can't happen. Finally there is a nice extension on the bottom for your pillow and head AND there's a draw-string hidden in the top of the bag so you can actually pull the top of the bag up tight if you want around your necks, sealing in the body warmth all that much better. This bag isn't a heavy duty affair but quite light and the interior fabric is really cozy. It's instantly comfortable. I have it a "good' rating overall because I supposed there are even better bags out there but for a lot more money than this one. The Grizzly is pretty nice and performed well as the temps dropped into the low 30s on the island. I'd buy it again and would recommend it to my fellow campers.