Dimples, I believe the fabric is cotton, I think there is an inner fabric of cotton too that holds the crystals, hope this helps. you want a fabric that won't fade on skin or clothes, and one that you can squeeze the water out of.

I think its a thin polyester, cotton will stay soggy wet far too long.

Hi Dimples... check the link below. It is the one giving instructions on how to make a "Neck Cool" for service men and women. Hope it helps.

I've made over a hundred of these things (several years ago) and I always used 100% cotton. They were never "soggy."

Here is a link that might be useful: Neck Cool at the Gator Project