Gravity. Fill the top reservoir, hang it, and the weight of the water pushes it down through the filter and out the hose. There is nothing to plug in, pump, or charge.

The hollow-fiber core blocks bacteria, protozoa like giardia and cryptosporidium, sediment, and microplastics. The carbon stage takes out chlorine taste and most odors.

Viruses and dissolved chemicals such as lead. No hollow-fiber filter does, whatever the box says. For floodwater or anything near sewage, add a PureTab. We would rather tell you now than have you find out later.

Up to 1,400 gallons across its life, depending on how dirty the source is. Backflush it with the included syringe when the flow slows and it keeps going.

A dry, unused filter can be stored anywhere. Once it has been wet, keep it above freezing. Ice inside the fibers will crack them.

Free US shipping, 1 to 3 day processing. 90-day money-back guarantee, even if you have used it. Lifetime warranty against defects in the bag, hose, and housing.

Email support@outlastprep.com or use the contact page. We reply within one business day.