The top humidifying tank of the hideout is ceramic clay and can release humidity slowly into the air assisting in maintaining ambient humidity levels.High grade materials, delicate texture, matte surface, with coarse pottery basin, helps maintain proper shedding conditions.You can flip the ceramic clay in the opposite direction, to form a flat eat absorbing basking rockYou can use the cermailic clay basin without black plastic liner for slow release of downward moisture to keep mosses and lay material moist.Easy to clean and long lasting. Made of heat- resistant and food grade plastic.17 X 10.9 X 7cm