These are postcards that can be printed on white or colored cardstock and then cut. There are 5 different designs with 1 with balloon type and 4 with different borders (3 of the borders are in black and white, and 1 is in color). Each of the cards with borders have Welcome Back and Welcome To Kindergarten, 1st Grade, 2nd Grade, 3rd Grade, 4th Grade, 5th Grade, or 6th Grade written on the card with 4 to a page. Remember to print in landscape and when you cut them, you might want to leave a small edge around the sides. To qualify for mailing at the First-Class Mail postcard price, it has to be at least 3-1/2 inches high x 5 inches long and no more than 4-1/4 inches high x 6 inches long. You can then write a short message to your students on the back and send as a postcard or a message to your students the first days of class for the new year. You can also use the very simple ones included. I hope this gives you a good description, and is helpful. Have a wonderful and successful year.