Getting the right fit starts with accurate measurements. Using a soft tape measure, follow these steps:

Circumference

Place the tape at your front hairline, wrap it behind your ear, around the nape of your neck, up behind the other ear, and back to the front hairline.

Front to Nape

Measure from the middle of your front hairline straight back, over the top of your head, down to the nape of your neck.

Ear to Ear (Across Forehead)

Place the tape just above one ear, bring it across your hairline, and end just above the other ear.

Ear to Ear (Over Top)

Measure from the top edge of one ear, across the crown, to the top edge of the other ear.