Try looking for something like these: Kool Tie REI Outdoors Beat the heat with a cooling tie! This lightweight scarf is filled with polymer crystals that slowly release water in a cooling action. Soak tie in water and the crystals hydrate, then wrap around your neck and feel the evaporative cooling action--works from hours to several days Evaporative action can cool blood flow to the brain, reducing heart rate and blood pressure Great for most activities, Kool Tie® is soft, comfortable and easy to wear Colorful print patterns add fun and flare to your outdoor adventure Instructions included