If you have any questions about our products, Our customer service department would be glad to help you. Chew King customer service can be contacted at: info@sportpet. Sure, your dog loves playing fetch. But he just might love destroying tennis balls more. If that sounds like your pup, The Chew King Supreme rubber ball is for you. It's a quarter pound of solid, 100% natural rubber that can stand up to serious chomping and gnawing without losing its edge As a fantastic fetch toy. Hard bounce is great for play, and with all that heft, it makes for a short-burst workout for your furry friend. Better yet, you can clean the ball right in the top rack of your dishwasher. Available in 2 sizes. Note: we're not kidding, this ball is heavy. Be careful where and how you throw it!