Nautical Collectibles Mermaid Day Perpetual Calendar Measures: 12 L x 3 W x 5.25 H Inches Material: Plaster with wood blocks Whimsical Mermaid calendar with adjustable wooden block numbers and months. Made of wood and pottery plaster. This perpetual calendar includes numbered wooden cubes and monthly blocks in a vintage-looking storage container to help you keep track of the date Great for Any Occasion: The cute decorative calendar blocks are perfect for teacher desk decor, school and classroom shelves, office tabletop, medical practices, coffee shops, and restaurants Easy to Use: The individual day and month date blocks for desk can be easily changed to reflect the current date or holiday