Measurements
To fit average head size

Each pamphlet has a different set of recommended yarns. The following is from the Poppleton version. The given yarn quantity is for the whole set, with no information on how much is required for the hat.

Materials
POPPLETON 4 Plys
Pageant
Main Colour (M) 15 balls
Constrast Colour A 5 balls
Constrast Colour B 5 balls.