1. High quality: Our return to school postcards are made of high-quality cardboard, beautifully printed, and easy to write. 2. Packaging includes: Each teacher postcard has a size of 4 x 6 inches, with a total of 100 sheets in a set. 3. There is a blank area on the back of these postcards, which provides enough space to write your blessings. 4. These are very suitable for getting in touch with future students before the start of the academic year - this is a great way to start a new year in an inspiring way! Let your students know that you are happy to see them return to school!