The Barrett Ball is uniquely constructed out of one solid unit of natural rubber. No seams and solid rubber throughout make it much more difficult to destroy so it will last longer and can be enjoyed by heavy chewers. Invented by a wounded US Army veteran, James Hayes and named after his service dog. The Barrett Ball is virtually indestructible, 100% lifetime guaranteed, and all profits donated to Dogs4Warriors. Red 2.5 Ball recommended for Small Breeds up to 24 lbs.