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Order by 23:59, delivered tomorrow
600 m² Experience Center
It will completely change the way you travel in remote areas.
Test results:
Meets NSF Protocol P231 for removing bacteria (99.9999%) and protozoa (99.9%) throughout the filter's entire service life, tested in “worst-case” water.
High flow rate:
Pumps more than 3 liters per minute or 1 liter per 20 pump strokes.
Ultralight:
Only 7.8 oz (221 g).
Ultracompact:
Measuring just 7 × 3.5 inches (17.8 × 8.3 cm), it is easy to carry, even when space is limited.
Field-maintainable:
Can be cleaned repeatedly to restore flow rate—without tools.
Very user-friendly: The Quick-Connect bottle adapter makes it possible to filter water directly into various containers, including all MSR hydration products and other wide-mouth bottles.


The HyperFlow microfilter uses the latest Hollow Fiber technology and our most advanced engineering to make water treatment so compact and user-friendly that it will change the way you travel in remote areas. The ergonomic design, extremely compact size, and tool-free maintenance make this filter equally suitable for day hikes and multi-day expeditions. With a filtration rate of 3 liters per minute, this is the most efficient microfilter ever developed.
A Quick Connect bottle adapter is also included, allowing direct connection to all MSR® hydration products and various other wide-mouth bottles. An advanced prefilter is also included to extend the filter's service life.
Weight: 7.8 oz (0.22 kg)
Dimensions: 3.5 × 7 × 3 inches (8.3 × 17.8 × — cm)
Effective against bacteria: Yes
Effective against chemicals/toxins: No
Effective against particles: Yes
Effective against protozoa: Yes
Effective against viruses: No
Filter medium: Hollow Fiber
Filter pore size (microns): 0.2
Flow rate: 3 liters per minute
Pump strokes per liter: 20
Filter element lifespan: ± 1,000 liters
Field-cleanable: Yes
Field-maintainable: Yes
Water bottle adapter: Yes
Filter element replacement indicator: No
Material: Hollow Fiber
Order from Sunday through Thursday before 23:59? Your order will be delivered the next day. On Fridays, this applies to orders received before 17:00, as these are delivered on Saturday. Your order will be shipped via GLS, PostNL or Trunkrs.
Have your order shipped to a ship or unit abroad. Enter the NAPO address as the shipping address in the shopping cart. We will provide the package with a completed and signed CN 22 customs declaration and ship it discreetly.
You can collect your order from our warehouse in Apeldoorn. As soon as we receive your order, we will prepare it for you as quickly as possible. Would you like to collect it outside our opening hours? Please contact us.
You have a 14-day cooling-off period from the day of receipt. Not satisfied? Get your money back. Almost all items may be returned, including discounted items. After cancellation, you have 14 days to return your order, and exchanges are also possible within 14 days. Returns are accepted only when the products have their original labels and packaging and are not damaged and/or used. Please note: items that are not part of our standard range and were specially purchased to order cannot be returned.