Grayl UltraPress Replacement Purifier Cartridge breathable The soft fabric won't cause

The soft fabric won't cause discomfort when wearing a pack or when your back is against a rock wall

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Insulated lid doubles as cup

You'll be sure to feel and look your best in this shape-shifting

Grayl UltraPress Replacement Purifier Cartridge breathable The soft fabric won't causeReplacement 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. Specifications: Removes waterborne pathogens (viruses,