The Guardian water filtration system has been invented in cooperation with the army, and thanks to its advanced technology it is reliably effective for all types of water. The filter is suitable for filtering viruses, bacteria and pathogens from the dirtiest waters. At the same time, it does not remove chemicals, radioactive contamination, heavy metals, particles less than 0.02µ and odors. The filter with hollow fiber technology is frost-resistant and drop-resistant.