SKIPDAWG X-Foam Ball for Dogs (Medium)ABRASION RESISTANCE: The dog catching ball is made of sturdy and durable materials, our x foam ball is non abrasive and withstand rough playing. The convex surface can also effectively clean your dog teeth and allows for easy grip. I'M FLOAT BALL: If your dog is a water lover, the lightweight and float able design of dog agility ball also enable your dogs to enjoy the endless splash fun. Ideal for water play and fetching games or retrieval training.