SPECS: Weight: 5 oz. Dimensions: 6 in. L x 2.4 in. W x 6 in. H Flow Rate: up to 1L/min Filter: 0.2-micron hollow-fiber microfilter DESIGN & DETAILS: One-handed operation makes pumping and drinking or filling a container easy Long hose design allows you to drink directly from the source without having to lay on the ground Filter effectively removes protozoa, bacteria, and particulate from water The small size allows this to easily fit in stash pockets Filter cartridge lasts up to 2000 liters and has a replacement indicator on it Filter can be cleaned on the fly Meets: EPA standards and NSF Protocol P231