This new Geocaching "Cool Cloth" bandana is made with an innovative new fabric by a company called Cool Canuck. They just happen to be geocachers and they wanted to create a bandana to keep you cool when you are out on the trail. It is made from a single-ply fabric that uses multi-fiber construction with NO CHEMICALS, PHASE CHANGE MATERIALS or POLYMERS. To activate the fabric, simple wet it, wring it, snap it!