Introducing the PureBlue 1-Year Filter Pack, designed for use with the 1:1 Reverse Osmosis Water Filtration System. This pack includes 3 filters, each made to fit perfectly with the system, ensuring clean and fresh drinking water. With a filtration method of reverse osmosis, this pack effectively removes impurities and contaminants from water, making it safe for consumption. Weighing only 5 pounds, it is easy to install and use, making it a great addition to any household.