Just let us know which designs from The Adventures of Mirabelle series are your favorites and we can do a custom boxed set for you. The cards are 4.25" x 6" in size and printed on heavy glossy stock paper with yellow envelopes. The cards are blank inside. Let us know at check-out which ten designs you would like. The boxed set comes packed in an eco-friendly, recycled red paper box. Email us a list of which ten designs you would like at check-out.