The AeroLite 5-Panel Hat is a performance-focused twist on the classic 5-Panel. The lightweight polyester construction makes it comfortable and durable for the most intense of game play, and the snap closure will ensure a secure fit. The NO-PRO option offers a soft, collapsible fit which will perfectly take on the shape of your head. The LO-PRO option offers a stiffer front panel, providing slightly more structure.""