The RapidPure^® Universal Purifier water bottle adapter turns your favorite wide mouth water bottle into an advanced water filter and purifier that removes over 99.99% of viruses, bacteria, parasites, sediment, and more. The purifier twists onto your bottle and features a flip top lid. More than a filter, the UltraCeram^® technology acts like a magnet to remove pathogens 100 times smaller than traditional microfilters can remove and works even after it has been frozen. With no pressing or back flushing required, this fast water filter is the best water purifier for personal use.