The Everlasting Bento Ball is made from a highly durable, tear resistant material that holds up the the toughest chewers. The unique design allows it to rol erratically, enticing your dog to play. Fill with Every Flavor Treats or Everlasting Treats. Use the Everlocking Treats to create challenging new shapes. Original Everlasting Treat Ingredients: Wheat Gluten, Gelatin, Water, Vegetable Glycerin, Natural Chicken Flavoring, Corn Gluten Meal, Brewers Dried Yeast, Lecithin, Sodium Diacetate (a preservative), Carrageenan (natural seaweed extract).