Send a special message in these groovy Marbled Pattern cards! With 12 cards and 6 unique designs, receiving a handwritten note in one of these will make your friends and family smile! Blank inside, these cards convey a heartfelt message for any occasion. 6 UNIQUE DESIGNS: Each box includes 6 different Marbled Patterns-- 2 cards of each design. These lively designs feature marbled swirls, overlapping layers of beautiful colors, and the liquid texture of an acrylic paint-pour.12 BLANK, FOLDED CARDS: Whether you're sending a card for a wedding, graduation, or birthday, these 12 blank cards allow you to personalize your own message. Each card measures 4.5 x 3.75 inches and opens either horizontally or vertically.13 ENVELOPES: With 13 sealable envelopes simply slip your handwritten card in; address and add a standard USPS stamp. The envelopes measure at 5 x 4 inches, which meets the U.S. Postal Service requirements for mailing with a standard stamp.Pair with the matching Tuttle Marbled Patterns Gift Wrapping Paper for a colorful and cohesive gift!