The Triple Crown Everlasting Fun Ball is an interactive toy designed to keep your dog mentally stimulated in an activity he naturally enjoys. Cap the ends with the Everlocking Treats for a tough challenge, or fill with any snack your dog loves to keep him busy even when you aren’t home. Turn meal time into a game by filling the Triple Crown Everlasting Fun Ball with your dog’s food instead of feeding him out of a bowl. Because of the design of the holes, there is no need to use peanut butter or anything else to keep the inner treats from falling out. Lead free dog toy. Pets should be supervised when playing with toys as no toy is completely indestructible. Sizes: Large- 4in.diameter. Medium- 2.75in. diameter.