The Tough By Nature Lucky Bamboo Stick is a durable, natural rubber dog toy that's the perfect shape for throwing, fetching, and carrying. A solid center makes this stick capable of standing up to endless games and intense chewers. The Lucky Bamboo Stick has open ends that can be stuffed with treats or peanut butter. Realistic detailing will convince your dog that he has finally found a stick that will last! Natural rubber. Solid center to stand up to endless games and intense chewers.