Starry Night Moon - Astronomy - Sky - Space - Greeting Cards, 6 x 6 inches, set of 6 (gc_50579_1) Dimensions (in inches): card 5.5 H x 5.5 W, envelope 6 H x 6 W Heavy duty card stock with blank interior Additional postage may be required Cards are creased for Easy folding Set of 6 greeting cards; 6 white envelopes included.