Virtually Indestructible - Still struggling to find durable toys for your dog, especially if you have a aggressive chewer? Indestructible dog toys are usually made of rubber or nylon. However, vet recommends that nylon toys can be dangerous to your dog. Not only can solid objects splinter, but they're also hard enough to break a tooth. We found only one material is capable of standing up to power chewers. Rubber. That is why we are here and durability is BiteKing's #1 priority Recyclable & Sustainable - All of BiteKing dog toys are made from natural rubber which comes from rubber tree. Unlike synthetic rubber, it is 100% Safe & Non-toxic. Safe for your pet's health, free of BPAs, phthalates, latex and other icky things you don't want in the pet's mouth. Recyclable and Earth Friendly. The sustainable material is natural and will degrade at the end of its useful life in the presence of oxygen much more quickly. No pollution and good to our mother nature Aggressive Chewers Approved - BiteKing rubber dog tug toy is engineered to be ridiculously tough and indestructible. All of our dog toys have passed the test and are approved by Large Dogs & Power Chewers like Labs, Pits, German Shepherds, Staffordshire Terriers, Boxer, Mastiff, Cane Corso, Husky, Doberman, Rottweiler and so on. In addition to being durable without being dangerously hard, the toy has some gives and flexibility. Your dogs will love how the toy feels in their mouth