[SAFE RUBBER MATERIAL]: The dog K9 training ball is made of natural rubber,which is solid and durable. [ROPE BALL SIZE]: The indestructible dog toy ball's dieter is 2.4inch / 6cm,and the length of rope is 11.8inch / 30cm. Our rubber ball on a rope can be filled with dog treats or food,suitable for most breeds of dogs playing,training and chewing. [BRIGHT & VIBRANT COLOR]: The rope ball can easily arouse your pets' interest,you can play the dog toy ball with your dog,improving relatship between you and dogs. [SOLID RUBBER BALL AND DURABLE NYLON ROPE]: Heavy duty rubber ball with hollow inside,easy to throw further with durable cotton rope. It is resistant to tear and scratch,and strong non-slip loop makes it easy to throw. [MORE PHYSICAL HEALTH]Playing exercise training ball develops your dog's body and coordinat,increasing lince and creates happy spirit,and it is also a good way to clean their teeth and exercise their muscles..