Royal Canin Cat Sterilised 4kg is a dry cat food formulated to address the specific nutritional needs of sterilized adult cats. It's designed to help manage weight gain, a common concern after sterilization, by providing a balanced calorie content and increased fiber to promote a feeling of fullness. The recipe also features high protein levels to support lean muscle mass. The 4kg bag offers a mid-sized option, providing a balance between convenience and value for owners of sterilized cats.