The card base is A2 in size (4-1/4" x 5-1//2" folded) and the file comes with the card base, four mats, the Happy Birthday sentiment cuts, the cowboy silhouette, the cactus, and the wagon wheel and the file is compatible with both the 8x12 and 12x12 mats. You can find additional images and a full tutorial on my blog:  http://jamielanedesigns.blogspot.com/2013/11/happy-birthday-cowboy-style.htm