Check the listing for details. Sport Berkey Water Bottle. Condition: New. Listed at 50.00 USD. Sport Berkey® Water BottleHolding Capacity : 22ozMaterial: BPA/BPS FreeLow Density PolyethyleneThe 22oz. Sport Berkey Portable Water bottle is the ideal choice for a personal traveling companion - featuring Berkey's exclusive IONIC ADSORPTION MICRO FILTRATION TECHNOLOGY.The theory behind this innovation is simple. The Sport bottle's filter is designed to reduce or remove many harmful contaminants from questionable sources of water, including remote streams, lakes, stagnant ponds, and sub-standard water supplies in foreign countries where regulations are non-existent or not enforced.This superior technology used in the Sport Berkey portable water filter was developed, refined, and improved through investigative laboratory testing and field research. Our team of water filter experts, field engineers, and research specialists have developed this purification process over countless hours of testing and research. The media contained in the water filtering element removes contaminants by the surface phenomenon known as "adsorption" which results from the molecular attraction of molecules to the surface of the media. Take It On The GoHolding 22 oz. and standing 11" tall and 2.5" wide, the Sport Berkey is the perfect size to take with you anywhere you go.Replaceable FilterThe filter in the Sport Berkey is easily replaceable to ensure you always have filtered water at your fingertips.Filtering CapacityEach filter has the ability to filter 100 gallons from a municipal water source, and 25 gallons from other water sources.