A warm welcome indeed! The wreath-festooned door on the cover of this very special holiday card opens to offer a tantalizing peak at festive Christmas tree. But by applying gentle pressure to the card's seams, it expands into a 5"x3½"x2½" "box" containing a cozy 3D holiday scene. Pen a few lines of Christmas greeting on the back of the card, before slipping it into the included gold envelope and popping it in the mail. Extra postage may be required.