Santevia Power Water Stick provides clean, mineralized, alkaline water from your tap at home, office, yoga studio, gym, and outdoor water fountains. It lasts 3 months or 180 L which woks out to be roughly 300 bottles of Alkaline water per sticks or 6c per bottle! It aims to add minerals and raise pH levels! It's easy to use - no suction or squeezing! The Santevia Power Stick is a masterpiece of unpressurized filtration technology.