If you are exchanging for a different size, simply indicate the desired size on the invoice/returns form, and we will handle the rest. For exchanges involving a different product, please email us at customerservice@momknowsjack.com, and our returns team will assist with the process. If the new item costs less, we will refund the difference. If it costs more, we will send an invoice via email that you can easily pay through our checkout with a click of a button.