I'm also looking for a decent emergency blanket/bag (see this thread) to replace the common space blankets or "Rettungsdecke" that we have here in Germany. <img src="images/graemlins/wink.gif" alt="" />

So far, I have come up with this:

MPI Extreme Bag and
AMK Thermo-Lite Bivvy Sack

Hope this helps. If you find more, please post.

Joern

[edit] Here is a quick review of the Thermo-Lite Bivvy Sack. It might be a bit bulky though to carry it concealed. The LAND/Shark looks like a good option, but is quite expensive. The Relags Super Sirius is another alternative for a robust, yet lightweight and compact blanket.