Cute & Colorful Monster Birthday Thank You CardsColorful Monster thank you cards feature adorable monsters in rainbow colors. With a polka dot background, they are a cute way to send your thanks. 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 10 white envelopes included 4. 5" X 5. 5"so they are the