Standard shipping is done via all major ground carriers, including FedEx, UPS, United States Postal Service (USPS). Allow up to 3 days for warehouse processing. Once your order leaves our warehouse, transit time is up to 7 to 10 business days within the 48 continental U.S., based on your location. Shipping and processing charges for all items is based on the item size, weight, delivery destination, or other factors. We do our best to provide you with accurate shipping and delivery times on all our designs, but please note that these times are estimates only. Shipping and delivery estimates are not a guarantee. We’re sorry, but at this time we are unable to ship to PO Box address.