MSR Guardian Gravity Purifier PFD 180-mile sled-dog race through the

180-mile sled-dog race through the Alaskan wilderness - in dangerous ignorance and with a fierce determination

But man-made caves that do not breathe can be even more dangerous than their natural cousins

Canterbury makes certain you're set by not only teaching you how to hunt and gather

specially made for your beloved dog

MSR Guardian Gravity Purifier PFD 180-mile sled-dog race through theState of the art virus protection in an easy, high volume gravity system. Ultimate Virus Protection: Meets NSF protocol P248 military testing standard for removing viruses (99. 99%), bacteria (99. 9999%), protozoa (99. 9%), sediment and microplastics from worst case water conditions. Better Tasting Water: Two stage purifier includes activated carbon to reduce chemicals and unpleasant tastes and odors. Easy to Fill: 10 liter reservoir is easy to fill