The Kalis Dry Cooling Helmet Pad cools for three days without recharging and installs easily into most hard hats with suspensions. By adding 1.5 ounces of water, the pad’s proprietary fabric promotes evaporation and cools more than 20° F below ambient temperatures. It remains dry during use, and doesn’t require refrigeration, freezing or submersion to activate. With more than 700 recharges before degradation, it will last the life of a hard hat, up to five years.
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