Designed and tested with the toughest of chewers in mind, the ZippyTuff Tree Branch 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 Tree Branch features a faceted 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.