The given yardage is for both the sweater and the trousers.

Measurements
Inside leg seam (excl. turn-back)
17, 21, 25 cms (6¾, 8¼, 10 ins)

Each pamplet has a different set of recommended yarns. The following are from the Loweth Wools version.

Materials
Yarn for both sweater and trousers
LOWETH Double Knittings
Poppet 40 gram balls or
Royalty DK 50 gram balls
Main Colour
3, 4, 5 balls
Contrast Colour (C)
1, 1, 2 balls
Olympus Knit and Crochet 100 gram balls
Main Colour
2, 2, 3 balls
Contrast Colour (C)
1, 1, 1 balls
Elastic: Waist length 2 cm (¾ inch) wide.