The BeFree Gravity 3.0L weighs just 192 grams and uses gravity to purify up to 2 litres of clean drinking water per minute. The handling of the water filter is particularly easy: all you need to do is fill the flexible BPA and PVC free Hydrapak hydration pack with water. The water passes through a 0.1 micron hollow fibre filter which reliably removes  bacteria, cysts and sediment with its pore size of 0.1 micron (0.0001 mm). 

The capacity of the filter is up to 1000L, depending on the water quality. 

The integrated bail handle on the nozzle simplifies filling. The practical carry strap makes fetching water from a river easier and the filter can be hung on a nearby tree once full. 

Easily clean the EZ-Clean Membrane by simply shaking or swishing the filter in the water. No back flushing or tools necessary.