Chew Chew Bones are the best chew toy for aggressive chewers. Constructed from food-grade BPA-free, natural rubber, these toys are designed to withstand the toughest chewers. They are both Durable and also dishwasher safe. The Large is 17cm x 7.5cm x 4.5cm and weighs 215g. They have a hole in each end which you can fill with treats, and the diamond design will help clean your dog teeth as they chew. We been trialling Chew Chew Bones now for several months, and the dogs simply love it. Chew Chew Rubber Bone for aggressive chewers