3dRose Greeting Cards, Chesapeake Bay. Blue Crab. Maryland, Set of 6 (gc_128181_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.