MSR Guardian™ Purifier tshirt The natural effect of Merino

The natural effect of Merino wool ensures good heat regulation and moisture absorption

YKK® front zip

The QuickDraw Microfilter System draws upon decades of expertise in filtration and hydration to provide adventurers the best user experience of any fill-and-squeeze water filter on the market

Made with crinkled stretch nylon fabric

MSR Guardian™ Purifier tshirt The natural effect of MerinoNothing is safer or easier to use for purifying the most demanding backcountry water sources than the Guardian purifier. Originally designed for military squads, it brings this highly advanced technology to global travelers, backcountry users, and those stocking emergency kits. Fast and easy to use, this pump purifier offers the added viral protection you need when traveling in developing nations and popular wilderness areas. Its advanced hollow fiber