UltraPress Purifier Cartridge Color:Black so you won't roll off

so you won't roll off in the middle of the night

At just 73 grams

Discover the trail legend for yourself

beautiful flame with a "bed of ashes" look

Ready your rifles with a versatile Mark 4HD

UltraPress Purifier Cartridge Color:Black so you won't roll offReplacement 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.