Hood can be removed and converted to a lounge sleeper. The 4-watt heater has dual thermostats that provide the perfect amount of pet-pleasing warmth while offering you the safety and efficiency of a low wattage heater. The heater is removable for washing. Pillow is removable and has a zipper for easy machine washing. The pillow inside is made from microfleece while the outside bolster and hood is made from attractive and durable poly/cotton. This bed is filled with premium polyfil made from recycled plastic bottles.