This is the perfect shelter for any cat that absolutely will not use an outdoor cat house. It is completely open but still keeps the cat warm. It has a 150 watt heatlamp in the top and a heated pad in the bottom plus straw bedding for added insulation. It even has a thermostat that turns the heat off during warm weather. Constructed of Cedar that is not only wearher resistant but also repells fleas and insects. We have one of these set up on our property and there is always a cat in it during cold weather.