Cadet Sterile Natural Bone for Dogs, 4 to 6-inch, White (Pack of 5) 2 sterilized natural shin bones for dogs 4- to 6-inch sections of white tibia for your pup to chew on These safe, sterilized bones are hollow; fill them with your dog's favorite treat Freeze the bones after you fill it to keep your dog relaxed and entertained for hours Providing your dog with a variety of chew types keeps their teeth healthy and satisfies their natural desire to chew