3mm crochet hook for first size, 3mm and 3.5 mm for second size, 3.5mm and 4mm for third size. 2.5mm hook for all sizes.

Measurements
To fit chest sizes
22, 24, 26 ins
(56, 61, 66 cms)
Length to shoulder
18, 20, 22 ins
(46, 51, 56 cms)

Each pamphlet has a different selection of recommended yarns. The following are from the Studley version.

Materials
STUDLEY 4 Plys
Paradiso Crepe Fingering
Main Colour 5, 7, 8 balls
Colour A 1, 1, 2 balls
Colour B 2, 2, 2 balls
Colour C 1, 1, 1 ball
Floranda, Swiss Nylon, Petspun Nylon
Main Colour 6, 8, 10 balls
Colour A 2, 2, 2 balls
Colour B 2, 2, 2 balls
Colour C 1, 1, 2 balls.