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Drawing on our decades of climbing, running, training and general experience in the mountains, we continue to develop and expand this collection of core products directly made by or designed and sourced by Rock + Run.

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MSR Trail Base Water Filter 4L in Grey colour shown hanging

MSR Trail Base Water Filter, close up of the filter

MSR Trail Base Water Filter, close up of the hose

MSR

MSR Trail Base Water Filter 4L

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Sold Out £140.00

The MSR Trail Base Water Filter 4L 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 4L 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.

Features

Tested: Bacteria (99.9999%), protozoa (99.9%) and particulate. Hollow fibre filter meets NSF protocol P231 testing standard.
Modular components allow system to quickly and easily transform from a 4L 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.