Royal Canin Light 40 helps rejuvenate your cats energy & condition. The high-protein & L-carnitine content of Light 40 helps your cat conserve their muscle mass at the cost of fat. Light 40 has an exclusive savour recipe that maintains your cats enjoyment in eating whilst providing a lighter meal. Rich in psyllium that satisfys your cats appetite Light 40 has been shown to reduce the number of calories consumed by cats.