Unlike the regular Flavorit™, the Flavorit Flex™ is a flexible bone that is engineered with moderate or gentle chewers in mind. Tiny flavor cells are molded into both sides of the Flavorit Flex™ bone so you can fill it with peanut butter, cheese, cream cheese, or any other spreadable treats your dog prefers. The tiny flavor cells hold just enough spread to lure your dog to chew, but not so much that they're getting so many calories. You can even add a different spread on each side to really up the flavors! No mess because it’s concave design. Once your doggie is done chewing, simply clean the bone with a small brush. Now it's ready to be re-charged with your dog’s favorite spread. Even though it works great with all kinds of spreads, dogs love it on its own too! The Flavorit Flex™ Breath bone is infused with mint and chlorophyll to promote healthy gums and fresh breath and the result is a delicious-smelling and drool-worthy bone your dog will love even without a spread! Giving your dog non-edible bones also massages their gums and provides scraping action on their teeth, much like a dental hygienist descaling the plaque from human teeth.Chlorophyll is a powerful detoxifier and nutritional immune system booster for dogs. It helps prevent the growth of bacteria that causes bad breath and even helps with digestion issues. Flavorit Flex™ Breath with chlorophyll is not a substitute for chlorophyll supplements or oral care for your dog. This bone is not recommended for aggressive or power chewers. If your dog is a strong chewer, try the Flavorit™ Breath instead.