The (4.25" x 6", folded) card features a gaggle of Christmas Arthurs on the cover, and the text inside says "Duck the Halls!"...leaving you plenty of room to write "Whoops," if, like me, you're planning on sending them out on Dec. 28th.
(Click HERE to see a larger image).
To order, head here and select "Sheldon" in the drop-down menu.