EXTREMELY DURABLE DOG BALL: Our proprietary natural rubber compound is engineered 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 he'll love! TESTED ON ALL BREEDS, SIZES AND AGES: This indestructible dog toy has been tested with puppies, power chewers and dogs. large breed dogs, including American Pit Bull Terriers, Bulldogs, German Shepherds and Rottweilers. IMPROVES MENTAL AND PHYSICAL HEALTH: This sturdy dog toy strengthens your dog's jaw, cleans teeth and provides your dog with a safe, non-destructive outlet to release built-up energy and stress. PERFECT SIZE - 2.8 INCHES: Slightly larger than a tennis ball - makes it easy to cast 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 that like to fetch, and it's strong enough to withstand heavy chewing when your dog gets tired of running REPLACEMENT GUARANTEE FOR LIFE: This bite resistant solid rubber ball is made from 100% safe, durable and long lasting materials. Good elasticity, resistance to chewing, durable. It is an ideal/best gift for your dog.