Unicorn Mermaid Birthday Thank You CardsUnicorn Mermaid thank you cards feature magical unicorns dressed as mermaids, an aquatic blue background with stars all arranged in a kid pleasing pattern. Both mermaid and unicorn lovers will adore them! Some features of our thank you cards: Professionally printed on 80# cardstock paper so you feel the quality. Teaches children how to send a meaningful handwritten note Easy to use because all you have to do is simply fill in and mail out 10 cards and