Aquarium decoration 4 pieces different colours bright colours can improve the visual effect and make your aquariums more beautiful, creating a kind of natural water environment for fish and shrimps. Diameter 7cm, Weight:43g, Made of high quality non-toxic rubber material, beautiful and do not fade, durable, rot or produce algae.Can be used with confidence. The artificial sea urchins has a smooth and realistic appearance, soft and elastic, natural and lifelike, attract fish and other aquatic animals. The aquarium decoration is non-toxic and safe for aquatic fish, easy to clean, can be easily cleaned with cloth and water, it is an ideal item to enhance the aquarium. The simulated bionic landscape plants are not restricted by the natural conditions of the sun or a harsh cold winter. You can give your fish a lively underwater world and decorate your home.