This is a round top serge hat, with the frame band the same material as the top. It comes standard with silver "FD" buttons (please specify if another color or letter is required) Not sure of your size? Order a velcro adjustable hat! SMALL: 6 1/2 - 6 7/8 MEDIUM: 7 - 7 1/4 LARGE: 7 3/8 - 7 5/8 XLARGE: 7 3/4 - 8 (Navy is a stocked color in velcro adjustable bands.)