Say hello to the Helios Filter a simple yet elegant water filtration system designed to purify your tap water into clean water. The Helios filter was designed in S. Korea and exceeds NSF standards, filtering out your water from contaminants, rust, "forever chemicals" and other harmful impurities. Say goodbye to your dirty tap water and hello to clean hydration. It is recommended to change the filter out every 30 days. Our subscription will send you 2 replacement filters every 60 days.