Here is a link to a spreadsheet with all of our sizing charts that are provided from our vendors. 

Please note if the customer is wanting to exchange or return due to sizing issues that is something you the store owner would need to handle on your end as we print custom one offs and do not hold printed stock. We are recommending store owners to have the customer send you back the garment so you can at least use it on a future order then once received you can place a manual order for the new item.