Embrace sunny days while keeping your eyes covered in the Under Armour® Iso-Chill Driver Mesh hat. All Under Armour® Apparel features a tagless design or tear-away tag with no left-over pieces. Spacer mesh back panel and laser-perforated side panels for all-around ventilation. Iso-Chill sweatband helps disperse body heat, making it feel cool to the touch. Stretch fit design for customized comfort. Durable woven fabric provides a flexible fit and feel. Branding on front. 90% polyester, 10% elastane. Spot clean. Imported. Product measurements were taken using size XL-2XL. Please note that measurements may vary by size. Measurements: Circumference: 25 in Brim: 3 in View Zappos.com Glossary of Terms Under Armour Iso-Chill Driver Mesh