Just add water and be insta-cool, great for hiking, biking and other outdoor activities!
 
50% nylon/50% polyester sport towel Latex-free, lightweight, soft, breathable When wet, towel cools for up to 2 hours, when dry it absorbs sweat. To activate: 1 - soak towel, 2 - ring out excess water, 3 - snap to activate (to re-activate re-soak and snap). Product Size: 31.49" w x 11.8" h