Additional gauge: 22 sts and 32 rows to 10cm measured over pattern

Measurements
To fit chest 41, 46 cm (16, 18 in)
Length from shoulder 25.5, 28 cm (10, 11 in)
Sleeve seam 12.5, 14 cm (5, 5½ in)

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

Materials
FAMILY FAVOURITES Double Knitting
Bumper Baby Ball
2, 2 100 gram balls
4 buttons.

Yarn needed for the complete set:
Bumper Baby Ball
3, 4 100 gram balls.