The MSR Sweetwater Purifier System is a water filter with purification system for backpacking and travel. A beautiful stream, lake or pond can look clear and clean, but you'd better filter that water before taking a gulp. This lever-action filter measures at just 2" x 7.5" and weighs only 14 ounces, but this little guy charges, filtering water at a 4-to-1 mechanical advantage. Not only does it pump water fast, but the SweetWater Purifier Solution kicks virus butt, effectively inactivating them so you can drink up without getting sick. Fill up that Nalgene and get ready to cook dinner or head back onto the trail fully hydrated to eat up more miles before finding camp.
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