WOMEN
Small Fits Sizes 2-4 Chest to Fit 33″-36″
Medium Fits Sizes 6-8 Chest to Fit 34 1/2″-36 1/2″
Large Fits Sizes 10-12 Chest to Fit 36 1/2″-38 1/2″
MEN
Small Fits Sizes 28-30 Chest to Fit 34″-37″
Medium Fits Sizes 32-34 Chest to Fit 38″-41″
Large Fits Sizes 36-38 Chest to Fit 42″-45″
Extra Large Fits Sizes 40-42 Chest to Fit 46″-49″