Card is printed on thick white card stock. Outside of card: Happy Birthday to my SisterInside: Wishing you a beautiful day filled with joy and happiness. Happy Birthday and blessings for the year ahead. Dimensions: Each card has a single fold and measures 5 1/4" x 5 1/4" and comes with an envelope. Buy six cards, get one free! (Free card must be of equal or lesser value.) Add seven cards to your cart and the amount for the seventh card will be subtracted from your total. Tip: If you would like to order more than three cards, get the best deal on shipping by combining your card order with a larger item, or a box of up to 20 cards.