Use a tape measure or a length of string that you will have to hold up to a tape measure to determine the length. Place around your head about 1/8″ above your ear, across the mid-forehead, completely circling your head. Hold the tape firmly, but not tightly. Measure your head where the hat will sit. If your measurement falls between sizes, choose the next largest size. If your hat is too large, there are hat sizing inserts readily available on internet sites such as Amazon.
