Beginning December 19, 2019, Mercari is prohibiting UPS or FedEx shipments to and from Hawaii and Alaska to ensure items arrive successfully to their destination. If you're shipping to a P.O. Box, the seller will need to use USPS. If you see an item you’d like to purchase that only has UPS or FedEx as an option (and you live in Hawaii or Alaska), we recommend reaching out to the seller to see if they will change the shipping carrier to USPS for you.