The handy, easy-to-use hard hat cooling pad helps you keep cool on the job. The lightweight acrylic polymers provide a surprising amount of cooling power simply through the process of evaporation. Soak the pad in water for a couple of minutes, and it will stay hydrated for up to four hours. And it’s endlessly reusable; just re-wet the pad and you’re good to go for another few hours. The hook and loop closures conveniently attach the pad to any hard hat suspension headband, ensuring it stays in place.