There is no schematic and no finished measurements given for the hats. The sizing is defined as follows:

To fit an average size child’s/adult’s head for the age indicated

Yarn requirements:
4–6 years: 45g
7–9 years: 50g
10–12 years: 55g
adult woman: 60g
adult man: 65g

Also suitable for Sirdar Click Aran and Sirdar Denim Sport Aran. Amounts may vary.

Instructions for the Pull on Hat begin on p 35.