Cowichan Handknit Sweater Vest Maple Leaf Motif Made in Canada Fron Enterprises Ltd. Women's Size M*.  Note there is no size tag, but I estimate it to be a women's medium based on the measurements (see below).  Comes from a smoke-free home.

MEASUREMENTS (LAY FLAT)

Pit to pit is 22.25"

Pit to hem is 16"

Shoulder to shoulder is 19.5"

Shoulder at collar to hem is 25"