![gravity water filter straw camping backpacking survival purifier filtration system hiking bag](https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)
Model: WD-FSBUL
Capacity: The Waterdrop gravity water filter straw system can provide 1,400 gallons/one straw of safe drinking water by backwashing to purifier the straw.
The large-capacity water bag can hold up to 1.5 Gallons of water at a time.
5-Stage Filtration: Made from selected filtration materials, the 0.1 um fiber membrane of the gravity water filter straw can reduce most harmful substances in water to ensure the safety of every drop of outdoor drinking water.
Applicable Scenes: Camping, travel, hiking, boating, fishing, rock climbing and biking.