MSR Guardian Purifier Size:One Size the Travel Wallet is a

the Travel Wallet is a multi-pocketed bag somewhat misleadingly named

the prime merino fibres are wrapped around a nylon core for increased durabaility

mesh panels keep your head cool whilst providing shade from the sun’s rays

but remains surprisingly light and packable

MSR Guardian Purifier Size:One Size the Travel Wallet is aIntroducing the world's most advanced portable purifier: the Guardian. Co developed with the US military, it's been designed to be the safest, easiest way to purify water wherever you are in the world. With a Hollow Fibre cartridge it removes viruses, protozoa, bacteria and sediment from even the dirtiest water. On each stroke the purifier uses 10% of its water to flush the contaminants from its filter, ensuring a fast flow rate regardless of water