Place in a well-lit area to absorb light then the dinosaur skeleton will glow in the dark which is really interesting. Kids get endless fun and happiness through the digging process and the gradual presentation of the excavated objects. Manufacturered by Gaweb. It is a perfect gift for your kids which helps cultivate their curiosity patience concentration observation ability and practical ability. Makes a Great Gift: Kids will love this pattern puzzle and will love you for it. It is nontoxic well crafted which makes it a present parents can love too! Perfect for toddlers and preschoolers age 3+ years old; Dig out all the skeleton parts in the soil block with tools. Observe match and assemble the dinosaur skeleton.