Outdoor Filter Pouch

The O-B1 is a soft pouch with a UF cartridge at the outlet: fill it, hang it or squeeze it, and the water passes through 0.01 micron membrane on the way out.

It weighs 35 g empty and rolls flat, which is the point — it takes up less pack space than a bottle and needs no pumping.

Rated for 300 L of filtered water under standard conditions.