Triple Crown Everlocking Treats provide the toughest chewing challenge yet! They are the first treats to "lock" into place as part of our interactive toy systems. These treats are made from irresistable natural ingredients without plastics or polymers, and are completely edible and digestible. Raised dental ridges help safely scrub your dog's teeth clean. Triple Crown Everlocking Treats are the perfect treat for dogs needing a new interactive challenge. Large - Liver Flavor Triple Crown Everlocking Treats fit the Triple Crown Everlasting Treat Ball (311401) and Triple Crown Everlasting Fun Ball (311400).