This personal water purifier filter straw is designed for outdoor use, enabling safe drinking water from natural sources during camping, hiking, and survival situations.

• Triple filtration system: sand head filters visible sediment; activated carbon fiber removes organic compounds, odors, and improves taste; 0.01 micron hollow fiber membrane filters contaminants

• Filtration capacity up to 4000 liters

• Compact and lightweight, easy to carry with detachable buckle and sling

• Threaded mouth compatible with 28mm bottle openings; includes converter for 30mm bottles

• Suitable for filtering fresh water sources such as mountain springs, rivers, lakes, streams, groundwater, rainwater, snow water, surface water, and tap water; does not filter seawater or heavily polluted water

• Reusable and easy to use by immersing the straw into water and drinking through it

• Includes water filter straw, converter, buckle, sling, and sand head

• Filter element can be cleaned to extend life; pump-type filter element is replaceable