Water Purification Filter Bottle (75cl) - Removes Contaminants by 99.9% based on technology originally developed for the NASA space programme Unique Water-to-Go filter technology eliminates over 99.9 percent of all Bacteria, Viruses, Chlorine, Fluoride and Heavy Metals such as Lead to give you safe, healthy, clean drinking water 75cl capacity and weighs 138g (with filter in) BPAfree / all materials and FDA approved Bottle Dishwasher Proof (Lid is handwash only) Filter is effective for 200 Litres which is roughly 3 full bottles per day for 3 months.