I have never heard of these. I looked at all of the sites you listed. It mentions a seat... is sitting in it the only option? That could get tiresome in a 24-hr or 3-day storm.

Looking at the photos and reading the description of contents, it looks like the people inside are the only means of support of the fabric. If so, wouldn't it be kind of cold with the fabric right on your back?

It looks pretty viable for emergency shelter, but I would still like some form of support so you could move around a bit.

Anyone out there with firsthand knowledge of use?

Sue