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MSR Trail Base Water Filter 2L

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The MSR Trail Base Water Filter 2L is the ultimate, versatile water filter kit that offers increased flexibility, making it truly adaptable to your adventures. 

Flexible to fit your different water needs from day to day, the MSR Trail Base Water Filter 2L features modular components that allow it to be used as a gravity system at camp, a pocket-sized filter on the trail, or a fast-and-light reservoir when you need to carry clean water with you.

The Trail Base filter uses hollow fiber technology that quickly and reliably removes harmful protozoa, like Giardia and Cryptosporidium, and bacteria, like Salmonella.


  • Tested: Bacteria (99.9999%), protozoa (99.9%) and particulate. Hollow fiber filter meets NSF protocol P231 testing standard.
  • Modular components allow system to quickly and easily transform from a 2 L gravity system into a small trail filter and back.
  • Simple Transitions: Trail filter simply quick-connects into gravity system to create the complete gravity-fed filter system.
  • Includes ultralight, durable clean water reservoir, which features our 3-in-1 cap for easy filling, drinking and pouring.


  • Weight: 62g
  • Size: 12.7cm
  • Filter Type: Hollow Fibre
  • Flow (L/min): 1L per Minute
  • Cartridge replacement indicator: Yes
  • Cartridge Life: 1500 L

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