From website:

NL18 - FAMILY OF VESTS

Straight needles and worsted weight make this an easy beginner vest. The simple cable runs up the center, separates at the V neck and follows along neck edge. Garter stitch borders are knit as you go. Side seams are the only finishing.

SIZES: Children 1-2, 4-6, 8-10 (med adult, lg adult, XL adult)

YARN: Worsted weight, 200 -500 gms

NEEDLES: 14” straight sz 7