Grayl GeoPress Purifier Cartridge Color:Black Large: Size 10-12

Large: Size 10-12

Patagonia's midsize Black Hole Wheeled Duffel is perfect for gear-intensive weekends or multiweek travel

Lightweight and sturdy

and verify that the water's ready with the thermochromatic color-change heat indicator

The Ideal bag for around town or on the trails

Grayl GeoPress Purifier Cartridge Color:Black Large: Size 10-12Replacement purifier cartridges for the GeoPress are designed to last 350 cycles (65 gal. 250L). 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. Compatible with One Way Silicone Valve for electrolytes and