The Hound Cooler is a battery-powered system that pumps cold water from its cooler through insulated tubing in a comfortable cushioned pad. The cold water going through the tubing provides a very effective dog cooling surface. Just fill the Hound Cooler with 80% ice and 20% water to cool your dog down after walking, running, hunting or any other exercise during the hot summer months. Comes with a conversion kit to easily adapt to any other cooler in minutes. Powered by (4) "D" cell batteries 6-volt (not included) for 75+ hours. Very comfortable 11" x 22" cushioned pad. Only "active" cooling system made. Chew proof tubing cover. Insulation around internal tubing prevents condensation/"sweat". Easily cleaned, wipes up clean.