N-Bone Puppy Teething Ring Is Approved For Puppies 4 Weeks To Senior Dogs. All natural. No nylon, plastic or rubber that could harm very young puppy teeth. Edible and digestible. Based on Rice powder, gelatin, glycerine. Crude Protein not less than 20%, Crude Fat not less than .5%. Crude Fiber not more than 2%, Moisture not more than 15%. 1.2 Oz. 3.5" x 3.5".