How to Measure Your Head
1. Take a tape measure, or you can use a piece of non-stretch string and then measure that afterwards.
2. Wrap the tape around the circumference of your head; above the ears and across the middle of the forehead, approximately where you would comfortably sit a hat.
3. Make sure it is not too tight or your hat will give you a migraine! It is better to be too big than too small because you can always add a piece of foam under the sweatband to bulk it up.
4. Record the measurement in centimetres and have a look in the size chart for your standard size.