In the chart below, the inch measurements are the size of the sweater you would want, which is usually a few inches more than your own chest size, depending on how close or loose a fit you like.

One way to gauge the fit you want is by measuring a sweater which fits you the way you like.  Lay it flat, measure it across the chest from underarm to underarm, and double that measurement (to get the sweater circumference).

ADULT SWEATER SIZE CHART
NOTE:  Our styles are unisex; find your usual Size, then read across to your sweater measurement
e.g. a woman who wears Medium would take a 40″ or 42″ sweater; that same sweater would fit a man who wears Small.

If their usual Size is:
Women
would take sweaters measuring
Men
would take sweaters measuring
X-Small 34″ 38″
Small 36″ or 38″ 40″ or 42″
Medium 40″ or 42″ 44″
Large 44″ or 46″ 46″ or 48″
X-Large 48″ or 50″ 50″ or 52″
2XL 52″ 54″
CAD $
CAD Canadian dollar