This Peter Millar performance hat is constructed from lightweight polyester that’s breathable and moisture-wicking for sun-filled days on the course or during a workout. Features an adjustable elastic loop closure for a fully custom fit and soft structured design. Features: 100% polyester. Adjustable loop closure. Sewn in eyelets for ventilation. Pliable bill for customized fit. Peter Millar Gopher Performance Rope Hat White