How to measure your head size:

If you are unsure about your head size, you can measure it accurately using a flexible tape measure (cloth/plastic). To ensure that you get the correct measurement, place the tape measure over the middle of your forehead, just above your ears, and rest it midway at the back of your head. Do not pull the tape too tightly unless you want your hat to fit snugly. It is recommended that you measure your head a few times to be as precise as possible. If you do not have a flexible tape measure, you can use a piece of string, although this method may not be as accurate. Once you have measured your head's circumference and marked the string, lay it flat and measure it to get the precise measurement.