Made of high quality resin material, non-toxic, safe and healthy. Change your aquarium into a beautiful scenery, make your aquarium vividly and add to natural color. It provides a beautiful and colorful decoration for your aquarium, and provide an excellent hiding place for fish. It is great to decorate your aquarium all the time with minimum responsibility and maintenance. Item Size(approx.): 17cmx9cmx8.5cm/6.7''x3.5''x3.3''(L*W*H); Package Content: 1x Aquarium Coral Reef Rock.