MEASURE YOUR HEAD
A standard head measurement is taken by circling the head, just above the ears and across the mid-forehead. However, you should adjust the angle of that measurement for a turban.
Hold the measuring tape close to the head, firmly but not tightly. You do not need to add any allowance for the perfect fit. If your head measurement is between sizes always opt for the larger hat size. HOOD sizes are all displayed in centimetres.
If you are in any doubt about measurements or would like advice please contact firstname.lastname@example.org