Our Jumbo Inkjet Photo Glossy Postcards come on 8 1/2" x 11" sheet and come 2 per page. Each large postcard measures 5 1/2" 8 1/2". These postcards are designed specifically for inkjet and bubble jet printers and are microperforated for easy breaking and cleaner edges. Made from a 10.5 Mil (230 gsm) Photo Glossy cardstock. One side is glossy, the other side is plain matte but printable. Please Note: Our Inkjet Paper is not compatible with Kodak Photo Printers.