Ensuring that our sizing charts provide accurate information is crucial, and we regret any frustration or disappointment caused by this discrepancy. Kindly note that this specific Vest has a "Slim Fit" which means the sizing will be smaller than regular fit vests. This information is available on the product page, so we recommend checking it to ensure that proper expectations are set. Your feedback is invaluable, and we'll review our sizing charts to ensure that they accurately reflect the dimensions of our products. Please don't hesitate to reach out to us via this email if you require further assistance.