Dual thermostats maintain the temperature at a comfy cozy 102°F, the high end of the normal canine body temp. Generally speaking, that's a good 15 or 20 degrees above the air temperature in winter. The heater can be removed so you can wash the cotton cover, which I like. The cord has a white plastic cover to avoid chewing mishaps, but I still wouldn't let a mouthy puppy use any heated bed with an electrical cord.
This is really a must if you have a older dog with arthritis or joint injury. It also could be used in the winter for those nights that are just a little cold. I recommend this product to every pet owner.