EXTREMELY DURABLE DOG BALL: Our patented natural rubber compound is designed to be as strong and indestructible as physically possible. Whether you have an energetic dog that plays non-stop or a super aggressive chewer, our toys are designed and proven to last longer. Give your big dog a real challenge with a toy they'll love! TESTED WITH ALL BREEDS, SIZES AND AGES: This indestructible dog toy has been tested with puppies, power chewers and large dog breeds, including American Pit Bull Terriers, Bulldogs, German Shepherds and Rottweilers. IMPROVES MENTAL AND PHYSICAL HEALTH: This durable dog toy strengthens your dog's jaw, cleans teeth and provides your dog with a safe, non-destructive outlet to release pent-up energy and stress. PERFECT SIZE - 7 CM: Slightly larger than a tennis ball - making it easy to throw and the perfect size for any medium or large dog; its size and sturdy design make it perfect for throwing long distances for those dogs who love to fetch, and it's strong enough to withstand heavy chewing when your dog is tired of running. LIFETIME REPLACEMENT GUARANTEE: This bite-resistant solid rubber ball is made of 100% safe materials, durable and long-lasting. Good elasticity, chew resistance, durable. It is an ideal/best gift for your dog.