Have a splendid time at the beach wearing the Columbia® PFG Super Backcast™ Booney Sun Hat. Omni-Wick™ pulls moisture away from your body to enable evaporation, keeping you dry. Omni-Shield™ repels stains and liquids to help keep you dry and clean. Omni-Shade™ UPF 50 sun protection. Pull-on style. Allover printed design. Adjustable drawstring chin strap closure. Textured poplin 100% nylon;Shell: 88% polyester, 12% elastane. Hand wash, line dry. Imported. Product measurements were taken using size SM/MD (6 5/8-7). Please note that measurements may vary by size. Measurements: Circumference: 24 in Brim: 3 in View Zappos.com Glossary of Terms Columbia PFG Super Backcast™ Booney