Size(.): 9x8.3x9cm With breathable and have an effect on purifying water in fish tank. Great shelter for , fishes, fishes, cichlids and other small aquatic animals. color: gray Material: Clay Package Contents: 2x Aquarium Cave Ornaments Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.