Gauge
1 group (7 tr and 1 dc) = 2 inches using 5mm hook.

Measurements
Width round head
46 and 53 cm (18 and 21 inch)

Each pamphlet has a different set of recommended yarns. The following are from the Argyll version.

Materials
ARGYLL Machine Washable Double Knittings
Ferntex, Super Nylon, Nice ‘n’ Easy Crepe, NEW Sportsday, or Babytime
Colour A: 3, 4 balls
Colour B: 3, 4 balls.