Use your neck, chest and sleeve measurements to choose the correct size from the chart below.
If your measurements do not fall in line perfectly with the sizes available choose the size that will be large enough to accommodate all of your measurements.

Size	Neck	Chest	Regular Sleeve	Tall Sleeve
Small	14½	34-36	33	n/a
Medium	15 & 15½	38-40	34	n/a
Large	16 & 16½	42-44	35	36½
X-Large	17 & 17½	46-48	36	37½
XX-Large	18 & 18½	50-52	36½	38
3X-Large	19 & 19½	54-56	37	38½
4X-Large	20 & 20½	58-60	37½	39

Tall sizing choices have an additional 2"-3" in length to accommodate a longer torso.