"Dad hats" is a term used to refer to baseball caps or hats that have a relaxed, unstructured fit. These hats often have a curved brim and a slightly oversized look. Full definition
Will have to check it out and that's the cutest dad hat I've seen! (treatsandtrendsblog.com)
I have so many dad hats on rotation already, but I'm always reaching for Emilio's as well! (styletomystreet.com)
Alright, fine, it was more like a bunch of thirty - somethings in dad hats eating crudités and listening to Action Bronson at a reasonable volume. (bonappetit.com)