- Virtually Indestructible dog ball for large medium or small dogs Durable small pet toys This is a great toy for human and K9 companionship! Made by natural rubber, nontoxic so it's not going to hurt your dog or it's teeth Ozone and chemical resistance, High temperature resistance, Excellent weather resistance, Anti-aging, anti-radiation, good flexibility, good elasticity The weight is 145+2 g, the size is 63+0.5 mm, the hardness is 55 Shore A. PERFECT SIZE DOG BALL= Makes it easy to throw and the perfect size for any small, medium and large sized dog