There are a few reasons an order can be returned to sender but most often it is due to an undeliverable address. Other instances include the package being unclaimed or customs, no one was available to sign for an order of a larger dollar amount, or the delivery was refused/returned. If it is sent back to us, you will receive notice once the order arrives back at our facility. You will also be contacted to verify your shipping address and see if you wish to have the product reshipped. New shipping charges will be applied for orders that have been unclaimed at customs, returned, or had an incorrect address originally provided.