The molded rubber ball has a foam core which absorbs and holds liquid. You soak it in water and then releases it through specially designed holes as it's squeezed/chewed on by your pet. It's the perfect way to quench your dog's thirst as they play. It can be frozen for even greater pleasure. Combines fun with refreshment Quenches dog’s thirst while playing Keeps canines cool in warm weather Absorbs water that is gradually released Freezable for long lasting refreshment