THE EVERYDAY DETAILS
Record what did not fit
'Too small' can mean several things. Was the back length wrong, was the chest outside the range, or did the cut sit awkwardly? Write down the specific issue before choosing a replacement. A different cut may solve a problem that another size does not.
Return to the exact size chart
Check the model and version on the label and compare your measurements with that product's current chart. Save a copy with your purchase notes so you can explain the issue clearly to the retailer.
Check the next step before ordering
Read exchange conditions, including the state the item must be in and who pays return shipping. Keep tags and packaging while checking fit. If you are uncertain, send the manufacturer your measurements and the specific fit issue before ordering again.