Flash mesh cooling bandana is constructed from 3 layer fabric combining hydrophilic fibers into a fiberous batting and thermally conductive core. Activate by dipping or running under water for 1-2 minutes, whisk away the excess water and put it right on. Outer fabric will be dry while the internal cooling fabric provides cooling for up to 8 hours. Spot wash or hand wash only. Wear as a neckband or headband.