These intricately drawn greeting cards feature black & white illustrations on the front, back and inside that can be colored by the sender or recipient using colored pencils or markers (not incl.). A great way to display your creativity, the set includes 12 envelopes and 12 cards, 4 each of 3 designs for birthdays and general sentiments with space to add your own greeting. Better than popular coloring books, the set lets you create beautiful, personal greeting cards for family and friends. Cards are 5" x 7".