K2 Madeira Island Cheese Chews are made from casein, high quality milk protein which is lactose, gluten & grain free as well as being low in fat and calories. Madeira Island Cheese Chews are also an excellent source of essential amino acids, calcium, and phosphorus, all critical for maintaining strong bones and healthy muscles. These chews don't break up or shatter into sharp pieces, instead the action of the dogs teeth and saliva soften the chew so dogs of different ages and sizes can enjoy it, preventing them from damaging the teeth, suffocating or having stomach and intestinal obstructions. XX-Large - 26.7cm / 220g - for dogs over 20kg * Long lasting hard cheese chews with peanut butter flavour * Ergonomic bone shape that dogs love! * Independently tested high digestibility * Casein provides protection, cleanliness, and elimination of dental bacteria * Low in fat & calories with essential amino acids * Calcium and phosphorus rich * Air dried product - not smoked like other chews