24 Days Christmas Countdown Calendar Gemstone Crystal Healing Stone Christmas Gift Advent Blinds Box Features: The countdown to Christmas is an exciting time for kids. Using a countdown calendar is one way to increase anticipation for the holidays. An advent calendar is a great Christmas gift with a new surprise every day. Made with high-quality, safe and non-toxic materials, this advent calendar is suitable for adults and children over 3 years old. Includes both rough and polished rock samples. Makes a great gift for girls and boys This toy can keep your child away from electronics and relieve stress. You can also practice number and counting skills with your kids. Surprise your little geologist with a rock collecting kit for kids, which will spark your child's curiosity and interest. This is the perfect Christmas gift for kids over 3 years old. A great science gift for mineralogy and geology enthusiasts. Size: 21*16.4*5 cm Package List: 1 x Christmas Countdown Advent Calendar Note: 1. Due to the influence of light and shooting angle the actual color of the item may be slightly different from the color shown in the picture. 2. Please allow 1-3 cm measurement deviation due to manual measurement. Thank you for your understanding.