UltraPress Purifier Cartridge Color:Black Durable carry bag included for

Durable carry bag included for grab and go adventures

For easy storage

beautiful flame with a "bed of ashes" look

Ready your rifles with a versatile Mark 4HD

At just 73 grams

UltraPress Purifier Cartridge Color:Black Durable carry bag included forReplacement 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.