About this item PERFORMANCE KNIT FABRIC – Soft, durable and stretchable fabric for comfort ONE SIZE FITS MOST – Stretchy and lightweight material fits snug on most head sizes INSTANT COOLING RELIEF – When wet, cooling is immediate and can last for hours MOISTURE-WICKING – When dry, will absorb sweat and wick moisture away SUN PROTECTION – UPF 50 protection from harmful UV rays ANTI-ODOR TREATMENT – For long-lasting freshness CONTOURED DESIGN – Tapered in back for low-bulk wear