Ultrapress Purifier Cartridge Pumice - Dyno White X-Dye built-in whistle and internal name

built-in whistle and internal name tag

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A burly 25-liter daypack with just the right amount of space to haul your daily essentials

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Ultrapress Purifier Cartridge Pumice - Dyno White X-Dye built-in whistle and internal nameReplacement purifier cartridges for the UltraPress are designed to last 300 cycles (40 gal. 150L). Lifespan will decline when purifying water with high levels of silt, sediment or tannins. Cartridge press time increases towards the end of the cartridge lifespan; when press time reaches 25 30 seconds, the cartridge should be replaced. Cartridge continues to protect, even as press time increases.