NWOT Hallmark Christmas Countdown Magnetic Cookie Sheet and 24 Magnets. Get into the Christmas spirit with this countdown to Christmas advent calendar. The calendar includes 24 festive magnets to easily cover each number, an accent red with white polka dot fabric bow at the top, and four flat square magnets on the back of the cookie sheet to hang on a fridge or other magnetic surface. Cookie sheet height 11" and width 8.5". Cookie magnets height 1” x 1.25”. Although we never used this set, the plastic packaging has a few cracks from storage. These cracks do not affect the magnet cookies or cookie sheet. The set can be used year after year. Celebrate the holiday season with this fun and creative advent calendar!