The Titleist Breezer Bucket Hat combines ultra-lightweight performance stretch material and the StaCool™ sweatband for exceptional breathability. UV treated materials provide sun protection of 50+ UPF to help protect you during those summer rounds. Features & Benefits: StaCool™ sweatband. Performance stretch material. Ultra-lightweight performance stretch material for breathability. Adjustable closure for maximum comfort and fit. UV treated for sun protection of 50+ UPF. One size fits all.