Tyrannosaurus, brontosaurus, pterodactyl…oh my! This impressive 7"-tall card lies flat so you can write your message on the underside, then slips into the included envelope for mailing. The recipient reads the message and, with a simple turn of a tab, expands the card into a cool 3D Jurassic landscape. Great for kids, science lovers…or friends "of a certain age" who can laugh at a dinosaur birthday joke! Extra postage required.