ULTRA LIGHT thin slices in gravy is for adult cats over 1 year. By utilizing Macro Nutrient Profile science, Royal Canin has formulated ULTRA LIGHT to be instinctively preferred by adult cats. That means your cat gets a formula it loves while getting the precise nutrition it needs at each and every feeding. ULTRA LIGHT has 15% less calories that ADULT Instinctive - only 56 kilocalories per can. This formula also includes L-carnitine to help burn fat and combat obesity.