Materials: Acrylic Size: 18cm*26cm / 7.09"*10.24" Color: As shown 1. Creative countdown calendar design, unlocking small surprises every day, adding to the anticipation and sense of ritual for the holidays. 2. Made of high-quality materials, safe and healthy, suitable for families and children. 3. This 2025 Nature's Tricks Advent Calendar features a core theme of "Natural Phenomena and Biological Wisdom" and incorporates a Christmas countdown design. Each day, each section unlocks a natural science lesson and a surprise gift. It serves as both a festive occasion commemoration and a fun educational tool for imparting natural knowledge. It's perfect for nature enthusiasts, families, and those seeking a unique Christmas style. 4. The immersive, natural design instantly awakens a desire for exploration. Made of safe and healthy materials, it enhances the user experience. 5. Perfect for parent-child interaction or for nature enthusiasts, this nature-themed collection includes science cards, badges, and a notebook, creating a "mini nature collection set" to satisfy enthusiasts' desires and expand their knowledge. For daily decoration, place it on a desk or windowsill, and the daily act of unpacking it becomes a "healing ritual." The nature-themed design blends seamlessly into your home, refreshing the space and relieving fatigue after work or study. Package includes: One set