Safe and Durable- Our wobble ball is made of high-quality vinyl, safe and non-toxic, and harmless to the health of pets so that your dog can enjoy the playtime! No Batteries Are Required- The rolling dog ball makes a fun giggle sound when rolled and shaken, the secret is in the sound tube built inside the ball, no batteries are needed, and it is safer for your stuffed friend! Get The Right Size- In order to maximize your dog's needs, we have designed a total of 8 sizes from 7cm to 15cm, suitable for all stages and weights of dogs, please measure your dog's weight before purchasing. Engage Your Pet's Instincts- This wiggle ball is more than just a dog toy. Its designed to engage your dogs instincts and curiosity, promoting mental stimulation and physical activity, helping to alleviate boredom and separation anxiety, reduced destruction. Built-in Handle Design- The active dog toys are fun to play with and easy for your dog to carry around. Its clutch pockets double as handles, making it convenient for your dog to grab, carry, and shake.