Measurements
Size 1:
To fit Birth to 4 months
Size 2:
To fit 4 to 8 months.

Each pamphlet has a different set of recommended yarns. The following is from the Jarol version.

Materials
Jarol Double Knitting
Imps and Angels
Main Colour: 2, 3 X 20 gram balls
Baby Double Knitting
Main Colour: 3, 3 X 20 gram balls
Cable needle
1 button.

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The following is from the Bruneau version.
Sizes To fit Birth to 4 months / 4 to 8 months
Materials
PETER PAN Baby Sport Yarn
40 grams / 40 grams
Pair needles each size 4mm (Eng 8, Amer 6) and 3¼mm (Eng 10, Amer 3).
1 button, cable needle.
Gauge
22 sts and 30 rows = 10 cms (4 ins) square measured over stocking stitch using larger needles.