Features and specifications:

•More filtering: Filters up to 2000 liters of natural fresh water without using any chemicals. That is 2000 liters clean and drinkable water in the backpack on the go.

•Versatile design: Easily setup a DIY filtration system by attaching on 28 mm thread soda bottle like Coca-Cola bottle, plastic bag, collapsible bottle or bucket. Or drink directly from water source like a straw.

•Backflushing with ease: A silicone gasket around mouthpiece helps to create air tight backflow for backflushing.

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