Wool felt hat that is crushable and water repellent. With a leather strap on the outside and on the inside of the hat is a cotton sweatband. Available in beige and brown. We advise not to roll up the hat when wet or to leave the hat for a long time time rolled up. You can determine the size you need by measuring the circumference of your head with a measuring tape (on the forehead, just above your eyebrows and ears).