The Katadyn Hiker Microfilter Camping Water Filter removes particles, cysts, and parasites 0, 3 microns or larger, The Katadyn Hiker Backpacking Filter element is glass-fiber with 129 square"" of filtering surface area, A carbon prefilter prevents large particles from reaching main filter extending its life, Chemicals and odors are adsorbed the the activated carbon core producing better tasting drinking water, The Katadyn Hiker Micro Filter Camping Filter Kit includes: replacement filter element, cleaning pad, Silicon lubricant, cleanable filter protector, and o-ring, The Katadyn Hiker Camping Filter is good for up to 200 Gallons (capacity depends on water quality), SKU: CWD692