Ultrapress Purifier Cartridge Color:Orange Our most versatile technical top

Our most versatile technical top is built for use on the trail or on the water: It's quick drying

while wind-resistant nylon with DWR keeps the elements off your hands

brushed performance stretch knit made with recycled material

Combining a kid-specific fit

Ultrapress Purifier Cartridge Color:Orange Our most versatile technical topReplacement 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.