Material: dog house in natural and healthy green wood, with natural lines and a grain of light wood, revealing the natural and original atmosphere. Easy to clean: the dog house can be washed in its entirety. There are four doors in total, which makes it easier to clean the dog house. Roof: The roof consists of three layers, a layer of wood (insulation), a layer of asphalt (waterproof) and a layer of small stone (solar screen), making the kennel isolated, safe, reliable and durable.It's a good choice. Windows: Dog hoes have windows for easy ventilation, good light transmission, so that can give dogs a good living environment.