CamelBak Unisex All Clear UV Purifier Bottle Portable purification system is built right in to your water bottle Energy efficient design last 10,000 cycles, even with exposure to cold weather. Impact and weather resistant cap insulates UV bulb for effective purification every time. Clear LCD readouts make water treatment simple and intuitive. Fill from tap,streams,spigots,and more. Reduces bacteria-99.9999%,viruses-99.99%,protozoa-99.9%