Durable and Safe -- Made of high-quality TPR rubber, durable and lightweight to float on water. Ideal for owners and dogs to play interactive games. Exercise -- Dog balls can be thrown for dogs to retrieve, helping to exercise their reaction speed and improve agility. Interaction -- Encourages interaction between dogs and owners, helping to strengthen their bond. Raised Design -- The surface features raised textures that help clean the dog's mouth and reduce tongue coating. Unique Design -- Features a two-tone color pattern to attract dogs' interest in chewing toys, and includes a built-in sound device to help maintain engagement during play. Material: Rubber 6.5 cm in diameter, hollow ball, weighing approximately 53 g, equipped with a BB sounder that produces a crisp sound