This box comes sized at approximately 3-1/2" x 3-3/4" x 1-3/4" when finished. The box is compatible with both the 8x12 and 12x12 mats and the size can be changed to fit your needs, even made larger. The box comes with the base box, the decorative label cuts (for the top and bottom of the box) and decorative elements. You can find additional images and a full tutorial on my blog: http://jamielanedesigns.blogspot.com/2014/02/valentine-favor-boxes.html