did the job
Bought this for extra warmth for a Western Mtneering 20 degree bag and served it's purpose.
I just stuffed it into the bottom of the bag as there's no way it fits back into the small case. Dries easily in the sun, lightweight, and is good for adding some temp to existing bag. Wouldn't use it as an outdoor, rainproof sack though but serves it's purpose to add a few degrees and is well built and lightweight.