Looking for a versatile women's hat that is both fashionable and practical for the active lifestyle? The Gaiam classic fitness hat for baseball, running, and general outdoor activities is designed for comfort and breathability for a sporty lifestyle. More than just a standard ball cap or baseball hat, this fitness hat features a built-in moisture wicking sweatband and is meant to be worn while exercising - great for weight-lifting, running and general fitness activities. Features an integrated dry fit polyester mesh moisture wicking sweatband on the inside of the hat to help keep sweat off your face and out of the eyes while running, jogging, playing golf, tennis, or any adventures the day brings. Designed for comfort during workouts, sporting events, and more, the built-in ponytail hole can be tailored with the strap to your comfort for a secure yet relaxed fit without compromising your style. Our fitted hats have a woven polyester material that is durable yet lightweight and breathable so you can wipe clean with ease or wash (see packaging for care info). The hat arrives with a pre-shaped bill optimized for coverage from the sun. Please note that one size fits most, so we recommend measuring first. The hat fits a head circumference range of 21.5 inches to 23 inches or 54.61 centimeters to 58.42 centimeters.