Get the Bad Guys in your Police Halloween Costume! What ya gonna do when they come for yous The police hat is the perfect accessory for costumes and events alike. Adjustable: one size fits most. Approximately 18 1/2" to 22" circumference around inside of hat. Cotton Police Hat. Navy blue police hat with black plastic bill and gold "city police" badge. Our unique Halloween costume accessories are just what you are looking for. A simple costume accessory for your perfect Halloween costume that your guests will remember and enjoy. Part of Costumes \ Hats & Wigs \ Novelty Hats