The usual Chuckwalla pouch -
A death rag made of ripstop nylon. The edges are doubled over and stitched so that they won't unravel.
Its tethered with some paracord so that it can't escape.
It also has a square of velcro to stick to your hat so that it won't fall off or blow off.
I was tired of losing death rags, so I figured I'd get one that I couldn't lose.
This is perhaps the most advanced death rag ever.