I've used the Survival Tube from
www.BlizzardSurvival.com with great success. But my application is a bit different, I use it as an over bag for my camping hammock.
It is a bit crinkly as they say and it's made with several layers of Reflexcell™ which I found to be fairly strong. The crinkly noise is not an issue once you get inside the hammock because you don't roll around like you would if you were laying on the ground. It weighs only 18.5 oz and can be folded an rolled to a small size for storage. It's delivered vacuum sealed about the size of a video cassette.
The benefit with using with a hammock is there's no strain placed on the Survival Tube, it's suspended in the air. I'm sure if you used it on the ground it would have a chance of being damaged, but used with a hammock it's great.
I've used the Survival Tube at 38 degrees with a fleece blanket and sleeping pad inside the hammock and was very warm all night long. This is a great product. If you're a cold weather hammock camper, you owe it to yourself to check this product out.
To use as an over bag, simply slide your hammock through the Survival Tube. Close the end at the foot with the pull draw cord. Get in the hammock, pull the Survival Tube over your body and hammock then adjust the draw cord under your chin. To avoid suffocation, always keep your head outside the bag.
For the low price of $29.95, I think it's a good product at least for my application.
TG
Here's some pictures ...
It comes vacuum sealed about the size of a video cassette