The attractively designed K&H Cool Bed III Dog Bed is a great way to keep your dog cool. There is no need for the use of electricity or chemicals with this dog bed and it can be used indoors and out. Simply add the suggested amount of water to the pet bed using the easy fill cap. The one of a kind Cool Core diverts the water throughout the dog bed making this a very comfortable, dry and cool spot for your dog to rest. The nylon / vinyl exterior is extremely durable. Your dog will find this pet bed irresistible.