Gauge
24 sts and 36 rows to 10cm over pattern with 3.75mm needles.

Measurements
To fit chest
46, 51 cm
18, 20 inch
Length from back neck
28, 32 cm
11, 12½ inch
Sleeve seam
15, 18 cm
6, 7 inch

Each pattern has a different set of recommended yarns. The following is from the Studley version.

Materials
STUDLEY DOUBLE KNITTING
Sugar Baby
7, 8 20 gram balls
Studleyknit
7, 8 20 gram balls
Five-in-One
2, 2 100 gram balls
Yorkdale
3, 4 50 gram balls
3 buttons
Stitch holders.

Yarn amount required for complete set with either Bonnet or Helmet
STUDLEY DOUBLE KNITTING
Sugar Baby
14, 17 20 gram balls
Studleyknit
14, 17 20 gram balls
Five-in-One
3, 4 100 gram balls
Yorkdale
6, 7 50 gram balls