The Comp Hat is an ultra-light, unstructured, crushable, packable, bendable high-output hat built for harsh use. The flexible mesh is breathable & comfortable in all temperatures. Hat can be washed by hand in water. This is the most comfortable hat your will ever own. Adjustable grosgrain snap & clip closure. One size fits most. Crushable, packable, bendable construction Mesh paneling is extremely breathable and lightweight Soft EVA foam brim is comfortable and flexible Performance sweatband manages moisture 100% performance polyester Hand wash - Hang dry