Discover the MSR Guardian, a gravity water purifier that ensures any water source becomes safe and refreshing, ideal for rural areas, international travel, or emergency situations. Its gravity system simplifies the purification of large water volumes. Advanced hollow fiber technology effectively removes viruses, bacteria, protozoa, sediment, and microplastics, transforming even the dirtiest water into drinkable water. The activated carbon eliminates chemicals, bad tastes, and odors. Filling the 10-liter reservoir is straightforward — hang it 6 feet high to get up to 1 liter of clean water in just 2 minutes. The kit includes a two-stage purifier, 10-liter reservoir, universal bottle adapter, hoses, and a zippered cover.