Material: thick paper. <br> Size: 13" x 16"<br> Package included: 2 Pcs photo booth props for the first day and last day of school. You can keep the "LAST DAY OF SCHOOL" prop for the next summer. <br><br> Note<br> Please use liquid chalk marker (not included) to write. Liquid chalk markers has brighter color on our board. Liquid chalk marker can be wet erased well on our board, can not be dry erased.