Head out on adventure with the Columbia® PFG Mesh™ Hooks Ball Cap. Omni-Shade® Sun Protection technology helps block damaging UV rays from reaching your skin, allowing for more carefree hours in the sun. Flexfit fitted cap for optimum comfort. Ventilated back for added breathability. 98% cotton, 2% elastane. Imported. Product measurements were taken using size SM/MD (6 5/8-7). Please note that measurements may vary by size. Measurements: Circumference: 20 1⁄2 in Brim: 2 1⁄2 in View Zappos.com Glossary of Terms Columbia PFG Mesh™ Hooks Ball Cap