The Chilly Pro Cooling Hat is the perfect companion for warm weather activities. Simply wet and enjoy the nearly instant cooling power that last for hours. Simply rewet to reactivate. Keep your cool while fishing, golfing, running, gardening and more. Cooling, sun protection for all your summer activities. The hat has a low profile and customizable fit that secures it for breezy days on the boat to summer theme park fun and ultra runners finish lines.