【HIGH QUALITY AND NON-TOXIC RESIN】Sculpture treasure chest made of high quality and non-toxic resin that will not harm your aquarium fish or plants. 【GOOD DECORATION】Designed With delicate details, this ornament will definitely enhance the visual effect of your aquarium. Provide a feeling of natural environment and lots of fun for you and your fishes. 【FEATURES】 The lid of the box can be opened and closed with the pressure of the oxygen pump.< /p>