Pets love cold water! Show your furry friends you really care! Proper hydration is a critical component of your pet's health, especially during warm weather or periods of high activity. Providing fresh, cold water is a great way to encourage your pet to drink. Features & Benefits: Double walled stainless steel freezer bowl. Put it in the freezer & upon removal the gel core will keep your pets water cold for hours. This means your pet can enjoy fresh, cool water inside or out without ice cubes that can melt in just minutes. Colder water is actually healthier for your pets, because it encourages proper hydration. Bowl is made of stainless steel. Gel inside is non-toxic and freezable. Sizes: Small -The Small Polar Bowl can be used by itself or with Neater Feeder Express or Deluxe for Cats & Small Dogs. Holds 14 ounces of water. Medium - The Medium Polar Bowl fits into the Neater Feeder Deluxe for Medium Dogs. Holds 28 ounces of water. Large - The Large Polar Bowl fits into the Neater Feeder Express for Medium to Large Dogs & Neater Feeder Deluxe for Large Dogs. Holds 58 ounces of water.