The AlphaCool Cooling Gaiter activates in water to keep you cool for hours on end! Perfect for a hot day of yard work, taking a walk, or any outdoor activity. The gaiter can be worn in a variety of ways including a face mask, neck gaiter, headband, skull cap, hood, etc. Multi-Functional: Wear as a Face mask, Neck Gaiter, a Headband or a Head Wrap Instantly Cools for Hours. Just wet it, wring it out, and snap it to cool. Activates in Water Super soft: Extremely comfortable on the skin One Size Wicks Sweat and Moisture Helps Regulate Body Temperature Made with 4-way stretch fabric for comfort Antimicrobial/anti-odor and easy-to-clean NOTE: Not for medical use