The Quickdraw series from Platypus offers a wide range of storage and compatibility options.  Whether you want a 3L gravity system, a simple filter to screw onto your favorite bottle, or something in between, the Quickdraw has you covered! With a filter pore size of .2 microns, these filters will get rid of particulate, bacteria, and protozoa. 3L per minute flow rate will keep you moving down the trail.