Starbucks Christmas Holiday 2023 Silver Ribbon Glass Cold Cup Tumbler Straw 18ozMost items are shipped using UPS Ground Saver where UPS handles the item to the destination zip code where the package is then transferred to USPS for final delivery.  Please provide a valid USPS physical address at checkout.  If an order is marked as RTS (Return to Sender) due to insufficient/incomplete address or any other address issue we will issue a refund minus our original shipping cost once we receive the returned item. Please reach out to us with any shipping address questions prior to placing your order as we do not ship to PO Box on most of our items.