Fill2Pure products are among the leading water purification devices in the world. They contain the highly advanced Fill2Pure water filter which can purify water up to 99.9999% while you drink. They use a patented purification system called “Ionic-Adsorption Micro-Filtration” which is trusted by military and humanitarian organisations alike, and has been well-proven to work in third-world environments. Fill2Pure filters have three main components: A Coconut carbon filter which traps and retains 99.99% of contaminants; a Ceramic disk which effectively ‘shreds’ large bacterial organisms such as bacteria and pathogens; and Iodine coated beads which trap smaller organisms like viruses & diseases rendering them harmless. AND these water bottle filters remove 90% of Fluoride. So when you use a Fill2Pure product you know you are getting the best.