Avery Printable Holiday Invitation Cards for Inkjet Printers, 4.25" x 5.5", 200 Postcards (8387), White Printable cardstock lets you design and print your own customizable cards White 4.25 x 5.5 blank cards feature ultra-fine perforations for clean and easy separation; meets USA postal regulations for post cards Optimized for inkjet printers for jam & smudge-free performance, guaranteed. Double-sided printing lets you add text and images to both sides. Personalize your printable card with your own design or choose from thousands of free templates and designs at avery.com/templates Perfect for RSVP cards, decorative postcards, thank you cards, invitations, sales & marketing collateral, moving announcements and save-the-date announcements