.Safe Material: Non-toxic TPR material is made to ensure dogs to chew or bite it safely. 4.3in thick diameter enhances the durability against damage by pets. .Fill the ball with your dog's favorite treats or food and it'll spill out while playing,to promote active and healthy feeding.Notice:Dog food is not included. .Through its unique design,As your dog plays and the rolls the ball, treats will fall out to reward them for being active. .Treat Dog Toy keeps your dog mentally and physically stimulated as they figure out how to retrieve treats. . If you find any question let our high efficiency, friendly and responsive after-sales team know and we'll solve it in time.