KONG® STUFF'N naturally delicious peanut butter is the ideal reward and tasty pastime as a filling for the KONG® CLASSIC. The challenge is increased by sealing the filled KONG® with KONG® STUFF'N and freezing it for 4-6 hours. A pleasant cooling during warm summer days is a great side effect to the long-lasting activity. KONG® STUFF'N Peanut Butter comes in a convenient and resource-saving pouch. The practical nozzle ensures easy and clean filling of the KONG® CLASSIC. There is no need to store it in the fridge.