Experience maximum portability with this lightest-in-class (90g) and smallest-in-class (13.8 x 5.7 x 2.8cm) water filter! Its easy operation - simply pump the handle - makes it the perfect choice for hikers, campers, fishers, hunters, climbers, and travelers. Dual ceramic membranes with a mean pore size of 0.1 micron provide fast, reliable water filtration (approx. 0.3 l/min or 10 oz. per minute). Enjoy up to 2000 liters (530 gallons) of clean, refreshing water with this filter and its storage box.