This chew ring is made from thermoplastic rubber it is very robust and a great way to help your dogs dental hygiene the nubs and ridges massage the gums when your dog chews at this ring and help to keep its teeth clean chewing also strengthens the jaw muscles your dog will love this brightly coloured resilient chew ring the slats on the ring make it easy for your dog to grab it and carry it around the ring is made from flexible tpr which yields slightly it is gentle on your dogs mouth