This hat is so old, circa 1984? from Grampy's tenure at PCA (some Pword Credit Association, maybe Production?), and must be made out of some quality threads.  Harper wears it every single day, and most often doesn't even take it off to go to bed.  Aside note: She does, however, shed her coat - usually on the floor somewhere, and then has to be reminded to put it in the closet hook...