Purina One - Indoor Hairball & Healthy Weight ManagementPurina One Indoor Advantage Hairball & Healthy Weight Formula is formulated with a natural fiber blend that helps minimize hairballs while promoting healthy digestion. At the same time, it is high in protein to help maintain lean muscle mass while promoting healthy weight. Purina One is made with real ingredients, including rice and turkey, for a healthy difference in your cat. Your cat"s good health is reflected in the way he looks and feels - it"s in his strong muscles, in his shiny coat and healthy skin.Available in 3.5 lb., 7 lb. and 16 lb. bags.