These hats are a great option if you plan to wear headphone style hearing protection, as there is no button on the crown, and is instead replaced with a tab of loop velcro. The hat is a Richardson 862 with a mesh crown and adjustable snap back.
We've taken our popular Connor pocket / backpack and updated it for version 2. The Hill People Gear Connor Version 2 is a dedicated backpack, although it still retains the tabs necessary to be used as a back pocket if so desired.