For medium dogs who chew gently. The Soft is the most forgiving hardness, close to rawhide in feel, without any of the rawhide problems. Good for puppies, seniors, or any dog that tends to nibble rather than grind. Made from plants: cellulose from responsibly sourced wood fiber and natural plant sugars. No nylon, no synthetic materials, no meat protein. The Classic flavor is fully plant-based, which makes it a reliable option for dogs with food sensitivities. Small suits dogs roughly 9 to 23 kg. Zoe is 11.5 kg and uses Small. Always supervise while chewing. You'll notice small flakes as your dog chews. That's normal and by design. Small flakes that are swallowed pass through harmlessly: the material is plant fiber, not plastic. Remove if chunks larger than a grain of rice are breaking off and move up one hardness level. Product Details Plant-based: cellulose and natural plant sugars Classic flavor: vegan, suitable for sensitive dogs Hardness: Soft Made in Croatia Manufactured to children's toy safety standards For dogs