Mothers Day Flower greeting card size A7. All greeting cards come with an A7 5.25in x 7.25in (13.33cm x 18.41cm) envelope. The card is blank inside. All cards are made and illustrated by Shannon Wirkler. Cards are printed and made in-house on silky smooth white 80lb. (225gsm) paper. All cards come wrapped in a plastic sleeve with an envelope to keep the card in the best condition for mailing and display purposes.