How to measure:

The fit of your hat is only as good as the measurement you supply us with - so take due care for accuracy.

To determine your head size, get a cloth tape measure and put it around your head. Place it where you want your hat to rest. If you have a hat that fits well, put it on. Look and feel where it rests. Measure in that same spot (remove the hat first). Usually, that is just above the center of the forehead in front. Wrap the cloth tape gently around your head making certain the tape lies midway on your occipital bone (the upslope of the lump on the back of your head). Make sure the tape is tight - but not uncomfortable. Measure twice to be sure. If you don't have a tape measure, use a piece of string and then compare the string length against a ruler.

Do no try to determine your hat size by measuring the inside of your hat. This would result in your new Campaign hat being made too small.