Cool More. Do More. Enjoy staying active longer and doing what you love even when the temperature rises with a cooling and invigorating Mission performance cooling cap. Instantly cools when activated with water, it cools to 30 degrees below average body temperature in less than 30 seconds, quickly activated in 3 steps: wet it, wring it, and wave it. To reactivate, just re-wet and snap. This cap stays cool for up to 2 hours. Lightweight & Adjustable: For all its power, this cap is incredibly lightweight and comfortable to wear. Adjustable velcro tab at the back allows you to get the perfect fit. Chemical-Free & Upf 50: It's machine washable and reusable with permanent chemical-free cooling fabric technology that will never wash out. It also provides Upf 50 protection from the sun. Perfect for keeping your hair, sweat, and the sun out of your face during running, jogging, sports, outdoor work, gardening, baseball, concerts, vacation, the beach, the lake, the pool, or whenever you want to feel instantly cooler. Nice service: If you are not 100% satisfied, please contact us, we will help you without hesitation.