Brooks partners with FedEx, DHL, and the United States Postal Service (USPS) for shipping services. Any packages shipping to P.O. Boxes, APO/FPO/US Territories, or Puerto Rico must be shipped via the USPS and cannot be expedited. Packages shipping to Alaska and Hawaii are serviced by FedEx and may require more time for delivery depending on the destination postal code. For all other packages, we select shipping carriers based on rates and the selected shipping service to make every effort to meet the estimated delivery window shown at checkout. For most standard-service shipments, final delivery is completed by the USPS.