Head out to your favorite river and set up base wearing the Columbia® PFG Mesh™ Fish Flag Ball Cap. Omni-Shade® Sun Protection technology helps block damaging UV rays from reaching your skin, allowing for more carefree hours in the sun. Adjustable snap closure. Ventilated back for added breathability. 98% cotton, 2% elastane. Imported. Product measurements were taken using size One Size (6 1/2-7 1/2). Please note that measurements may vary by size. Measurements: Circumference: 21 in Brim: 2 1⁄2 in View Zappos.com Glossary of Terms Columbia PFG Mesh™ Snapback Fish Flag Ball Cap