【The Ultimate Specimen Collection】 A perfect independent collection or add to any child’s specimen collection, including 24 rough and polished ore samples. Be a great gift for boys and girls. 【Premium Material The advent calendar toy is made of high-quality material, it is non-toxic and safe. Suitable for adults and adults and children over 3 years old. 【Interesting Christmas Calendar】24 types of rocks, gems, minerals specimens with 24 openings (may contain the same stones or stones that are not shown in the picture), with different surprises every day, forming a lasting attraction for children. 【The Perfect Gift】Both children and adults like this gift. Note: Not edible. Please do not put it in your mouth, it is not suitable for children under 3 years old. 【 Closed Packaging】 It is difficult to find the internal products from the outside, which increases the children's interest, so that children can dig out small surprises every day. Parents can also add special surprises to their children on the designated date.