Simple and quick-to print.  Hooks on the inside and outside of the cap to be more secure.  I used PETG for extra strength over PLA. 

Use paracord and a locking clip (like this one: https://www.printables.com/model/570028-spring-cord-lock) to secure the strap onto your chin.

Note:  I can't make guarantees as to what wind levels these will support given the variety of fits and materials