Drink Directly from the Source. Safely.The Personal Water Filter Straw uses a 4-step hollow fiber membrane filtration system to remove up to 99.999999% of contaminants from natural water sources. With a 1500-litre (396-gallon) capacity, it provides clean, safe drinking water for an entire season of outdoor adventures — no chemicals, no batteries, no waiting. Drink directly from streams and lakes, or filter into your water bottle.Key Features 4-Step Hollow Fiber Filtration – Removes bacteria, protozoa, and suspended solids 99.999999% Filtration Efficiency – Eliminates harmful microorganisms from natural water 1500L (396 Gallon) Capacity – Long-lasting filtration for extended outdoor use No Chemicals or Batteries – Pure mechanical filtration; ready Drink Directly from Source – Use at streams, lakes, and rivers without filling a bottle first Bottle Compatible – Insert into your water bottle for filtered sipping Ultralight & Portable – 21 × 3 cm; fits in any pocket or pack Basic & Upgrade Sets – Choose your configuration Specifications Specification Details Filtration Technology 4-Step Hollow Fiber Membrane Filtration Efficiency 99.999999% Capacity 1500 Litres (396 Gallons) Dimensions 21 × 3 cm Power Required None Chemicals Required None Use Cases Hiking, Camping, Travel, Hunting, Survival, Backpacking Set Options Option Contents Price Basic Set Filter straw only $48.10 Upgrade Set Filter straw + accessories $49.95 Why Choose This Filter?Hollow fiber membrane filtration is the most reliable mechanical water purification technology available — it physically blocks contaminants rather than relying on chemical treatment that can degrade or run out. At 1500 litres, this filter lasts far longer than iodine tablets or chemical treatments. The 21 × 3 cm size means it fits in a shirt pocket, making it the lightest and most accessible water safety tool you can carry.I For Hiking and backpacking in remote areas Camping near natural water sources International travel in regions with unsafe water Hunting and fishing in the backcountry Emergency preparedness and survival kits In the Box 1 × Personal Water Filter Straw Additional accessories (Upgrade Set only)