Men's Under Armour Iso-Chill Armourvent Trucker Cap

This hat was designed to keep your head cool by dumping excess heat through special vents that allow hot air out, but are small enough that the sun's rays aren't an issue.

ArmourVent™ Technology delivers ultimate breathability in a light, stretchy, durable & fast-drying fabric
Material wicks sweat & dries really fast
Trucker mesh side & back panels deliver added ventilation
Iso-Chill sweatband helps disperse body heat, making it feel cool to the touch
Adjustable snapback closure