in PA 250 square inches of orange is required on back chest and head combined. i personally hate wearing hats, they make me itch and thats partially why i almost never go hunting. i do have an orange coat, thats significantly more than 250 square inches. so basically, if you up to/over 250 without a hat, do you NEED one? the only "hat" i can tolerate is a hard hat/ foresters helmet when i work, but i think id look a bit, well off if i wore one of them hunting lol.