Designed and tested with the toughest of chewers in mind, the ZippyTuff+ Lightning Bolt is one of our toughest toys yet! Made with an even more durable TPR, this toy is perfect for dogs who are serious about their chewing game. The ZippyTuff+ Lightning Bolt features a faceted gem-like design that is extremely satisfying to chew. And with it being made from the more durable ZippyTuff+ material, it's able to withstand hours of chomping and chewing play.