Thank you for viewing. This is a warmer case for hamsters. I didn't use it much because I had other heating supplies. How about it for regulating your hamster's temperature in the coming season? The box is not included. It's sized to fit a regular-sized warmer. - Design: Perforated design - Size: Length 10cm, Width 14cm, Height 1.5cm - Material: Plastic - Use: For small animals, heating/cooling, seasonal items