Mountain Equipment Company

MSR Trail Base Water Filter 4L


Size: 4L

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Shop with confidence. If it’s not working out, you can return it (consumables, electronics, undergarments and swimwear excluded).
Really. If it's not up to snuff after you use it (a couple times) you can still bring it back. It lasts longer than 30 days, but not forever. We'll be fair about it.


A simple system for getting clean water. You can use it as a squeeze system on the trail or as a gravity-fed, hands-free system once you're in camp. Just connect the dirty water source to the filter and the gravity pipe cleans water out the other end.

  • Includes an MSR TrailShot filter and two 4L MSR Dromedary bags, labeled "clean" and "dirty", plus a connector hose
  • Compact silicone bulb pump is easy to use and only requires 1 hand
  • Long hose keeps you out of the dirt, when drinking from the source
  • Hollow-fibre filtration system is easy to clean, and pumps with little resistance
  • Water quality will significantly affect the filter's life
  • Filter mouthpiece has a debris cover to keep things clean
  • Filter cleans with an easy shake
  • Do not allow the cartridge to freeze after initial use

Tech specs

Weight516g (4L)
Ideal for
  • Camping and hiking
  • Frontcountry camping
  • Day hiking
Hollow fibre technology
Dimensions30.5 x 12.7cm
Made inUSA

Reviews (14)

3 out of 5 stars with 14 reviews for MSR Trail Base Water Filter 4L

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