The lightest, most compact filter on the market. Small size fits in coat pocket or waist pack. Ideal for travel and day hiking. Exclusive silver impregnated ceramic element lasts up to 2000 gal. Microfiltration method: Field-cleanable 0.2 micron ceramic depth filter. Output: 0.5 qts./minute. Weight: 8 oz. Height: 7″. Includes: Prefilter, bottle clip, carry bag, measuring gauge and cleaning pad. Intended for use with clear water only.