Counter Assault's Bear Keg Bear Resistant Food Container is made of an extremely durable and highly visible proprietary polymer blend to safely store 6-8 days worth of food. The Bear Keg protects your food and the bears. Bear resistant food storage containers are mandatory in many National Parks in the United States. Counter Assault's Bear Keg meets U.S. Forest Service Specifications— Certified by the Interagency Grizzly Bear Committee and the Sierra Interagency Black Bear Group for use in ALL National Parks. THIS BEAR KEG IS GRIZZLY TOUGH!