I haven't used it much. I think I only washed it once or twice. Of course, I've never worn it outside extensively. The size is L. Thank you. This four-panel hat is made from ripstop material with a wrinkled finish, giving it a vintage feel and a calm texture. Material features: Ripstop nylon with a wrinkled finish that provides a vintage feel, a calm texture, and a dry feel. Material: Unitika Ripstop Nylon (Outer fabric/Nylon 100%, Partial use/Polyester 100%)