Spending time outdoors can stress an active cat's immune system, leaving it vulnerable. FIT and ACTIVE is for active cats over 1 year of age. The unique ring-shaped kibble encourages a cat to slow down and chew. The specialized kibble breaks down and is easily digested, which is important for a cat that does not stop moving after consuming a meal. FIT and ACTIVE supports proper nutrient balance and an ideal weight. It provides 100% complete and balanced nutrition and contains a specialized antioxidant complex.