This card is inspired by the original TV series. Each is printed onto black cardstock in shiny metallic gold foil. It's very hard to photograph the gold foil. Any variations in color you see are items reflecting in the mirrored surface. The front of the communicator is cut so it can "flip" open to reveal the text inside. Each measures approximately 5.25 x 3 inches and comes with a matching black A2 envelope. The inside can say anything you like as long as it is 25 words or less (about the same number of characters/words you see in the photos). We recommend getting a gold metallic or gel pen to address the envelope (not included). If you would like to use these as invitations, we offer sets of 12 at a discount. The gold foil process is not perfect and there may be tiny areas of black showing through.