All Season Used Hamster Cave - Temperature control for all seasons - The first hamster house designed to adjust nest temperature with a top ice box and a bottom heating box, providing a warm nest in winter and a cool home in summer. - Includes 2 ice boxes that stay cold for 3-5 hours. Extra cold and warm devices are not included here. - Respect the natural habits of hamsters - Made of natural red clay ceramic material fired at low temperatures, environmentally friendly. - Refracts more than 90% of the light to provide a cool hiding place for hamsters. - Built-in sound absorption helps block external noise for a quiet sleep home. - Spacious castle shaped hamster house - Unique castle shape to beautify and decorate cages. - Overall size is 15.518 cm / 6.1" 7.08" (DH), entrance size 6.5 cm / 2.5" and 7.5 cm / 2.9" (WH). - Suitable for dwarf hamsters, gerbils, mice, golden bears and other small animals. - Easy to clean and long lasting - Easier to clean and more chew-proof than wooden or other materials. - Smooth surface can be rinsed underwater and air-dried for convenient cleaning.