Stimulates your dog’s nose and spirit. Prevents boredom and loneliness when you’re absent. Prevents unwanted destructive behaviors due to boredom or anxiety Help for the growth and development of your dog. Materials: plastic and rubber. This LED bright ball is made in Plastic bouncing and blinking. It’s a good toy for your dog or chat, suitable for playing inside and inside. He needs 4 AA batteries to operate (batteries not included). Dimensions: 12.5 x 12.5 cm.