I make these hats in three sizes: 55.5
cm, 56.5 cm and 57.5 cm. The average UK hat size for a woman is approximately 56.5 cm but because wool felt is a friendly sort of fabric you don't need to get the size absolutely exact.
How to decide on your hat size: Place a string or flexible tape measure right around your head just above your ears and across your forehead. Hold it firmly but not too tight. This will give you
the measurement. If your head measurement is not exact to one of my sizes, don't worry about it, everyone is individual, just choose the next larger size.
Wool doesn't mind a shower of rain (just
ask a sheep) - but make sure you dry your hat in an airy place in the original shape. Don't get it completely wet if you can help it or you may need to dry on a head shaped shape to keep the same size and look. If you get a mark on your hat, sponge
it clean without immersing the whole thing in water.