The Sport Berkey® Portable Water Filter is the ideal personal protection
traveling companion - featuring the IONIC ADSORPTION MICRO FILTRATION
SYSTEM. The theory behind this innovation is simple. The bottle's Filter
is designed to remove and/or dramatically reduce a vast array of
health-threatening contaminants from questionable sources of water,
including remote lakes and streams, stagnant ponds and water supplies in
foreign countries where regulations may be sub-standard at best.... More Information!