Just saw this on another site.

Help for the lost: a fabric antenna to keep you from being a castaway....

... the next time you're lost at sea, you just might be thankful you've got it. That little square of fabric is actually a flexible antenna designed for the Cospas-Sarsat distress signal network, ......

Read it all at; http://www.engadget.com/2011/10/04/help-for-the-lost-a-fabric-antenna-to-keep-you-from-being-a-cas/

Greg