Izzi Accessories Fedora Black Hat With SparklesIzzi Accessories Fedora Black Hat With Sparkles Available To Order if the size is unavailable How to measure your head and decide which size to choose You can use a tape measure (or a length of string that you can then measure) to determine the length. Place the string or tape around your head just above your ear, across the mid forehead, completely circling your head. Hold the tape firmly, but not too tightly. You need to measure your head exactly