Recognize student birthdays by writing them on this chart with a dry-erase marker! Also a great reference for the months of the year in Spanish. Marker sold separately. 13 x 38 inches. Laminated. Please Note…To get the longest life from this dry-erase poster:- Use only dry-erase markers.- Do not leave the same writing on the poster for weeks or months. Erase posters when they are not in use, or change what is written on them often.