‎4.25 x 3 x 10 inches

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0.1 micron water filter removes harmful organisms like bacteria 99.9999% and protozoa like Giardia & Cryptosporidium 99.9%, surpassing EPA standards
Collapsible 1.0L hydrapak soft bottle flask packs down small to fit in tight spaces (jacket pockets, purses, backpack, fly vests)