Natural and edible Icelandic Hand Wrapped Cod Skin Long Chew Sticksare single ingredient and contain no additives, preservatives, or supplements. They come only from the pure icy waters of Iceland. Not only are they delicious for your dog, but they also reduce tartar and plaque build-up for healthier gums and teeth. They are also a great natural source of Omega-3 fatty acids, promoting healthy skin and coat for your pet.