I deal in customized products, so once the item is customized according to the customer it cannot be change or re used. Such item should be kept non returnable but instead it is having policy of 10 days returnable. How do i work with this condition?

I do get return stating Size is Small or No longer needed or such reasons. What should be done in such situations?

And now a days the piece returning without reaching the customer is reaching its heights.

Please help us if u have some solution for the same.