This product is only available for shipment to an address in the United States. Acid & Lignin Free. Each 8.5" x 11" sheet perforates into two 5.5" x 8.5" invitations. This item is compatible with inkjet and laser printers. Includes 25 sheets (11x8.5 inches). Use with 6x9 inch envelopes or announcement envelopes. It's easy to print your own invitations, announcements, and more with easy to use templates and instructions. Check out the printing tips page for helpful printing Q & A.