JW® Tanzanian Mountain Ball is a tough rubber treat ball infused with vanilla extract. It's deep flexible ridges are designed for maximum grip making it an excellent choice for games of fetch. Ridges can also be stuffed with treats or peanut butter to make for a boredom busting interactive dog toy. This durable ball has a powerful bounce, and will hold up to tough play. Floats in the water for extra fun. A great size ball for puppies and medium to large size breeds. 7.6mm diametre. Colour may vary.