MSR Thru-Link In-Line Microfilter

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Adding minimal weight to your pack, the MSR Thru-Link In-Line water filter clicks into your hydration reservoir and makes it easy to stay hydrated on long day hikes and fast-paced missions.


  • Engineered for high-flow, easy drinking—no need to stop and filter; just scoop and go
  • At camp, the Thru-Link lets you use your reservoir as a gravity system for the luxury of pump-free filtration
  • 2-stage filtration: Fast-flow hollow fiber removes pathogens, particulate and microplastics; activated carbon reduces chemicals, tastes and odors
  • Combination of hollow-fiber technology and activated carbon is effective against bacteria (99.9999%), protozoa (99.9%) and particulate (dirt, microplastics)
  • Quick-Connect system makes this compatible with any hydration reservoir system on the market
  • Used by the U.S. military for more than a decade; rugged ultrasonic welded housing provides reliable durability
  • Meets U.S. EPA drinking water standards and NSF protocol P231 testing standard for removal of bacteria and protozoa

Made in USA.

View all MSR Gravity Water Filters

Technical Specs

Best Use


Filter Type


Filter Medium

Hollow fiber/activated carbon


Protozoa And Bacteria


40.6 fluid ounces

Housing Material


BPA Free



7.5 x 1.5 inches


2.5 ounces

18 reviews with an average rating of 4.1 out of 5 stars

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