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

Measurements
Front seam
17.5, 20.5 cm (7, 8 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
1, 2 100 gram balls
Stitch holder
Elastic for waist.

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