Aqua Optima Evolve 60 Day Water Filter 4 pack = 8 months' supply. Also fits Mavea.

Unique 5 step filtration system that removes high levels of impurities from tap water. Aqua Optima filters out impurities but allows through elements found in water that are necessary for the proper functioning of our bodies such as fluoride, potassium and magnesium. Aqua Optima water filters have been designed to deliver a consistent performance throughout their life, allowing you to enjoy the benefits of filtered water with complete peace of mind.