MATERIAL: Use high quality resin, environmentally friendly and harmless, simulation tree trunk, used for fish tank ornament, turtle fish tanks, etc. DECORATION: Beautify the aquarium to make the aquarium environment more in line with nature. Will not discolor, rot or affect water quality and pH. SIZE: The treehouse size is 12.5 x 9.5 x 12.5cm, the door size is 4.5 x 2cm, the bottom is hollow, the fish hunt and play, rest and sleep , a good place for breeding and hiding, can increase the safety of pets. WORK: The texture of the bark and the edges of the trunk have been polished during production, and the sharpness has been removed while retaining the original beautiful texture. It is safe for all pets, shrimp, fry, hermit crabs, fish and even reptiles. ENVIRONMENT OF USE: The treehouse ornament is lightweight, but can sink naturally, will not float. Both fresh water and salt water can be used.