Dependable filter - MSR AutoFlow Replacement Cartridge V2

Works well. You can remove the black rubber casing to significantly reduce weight. Can be used with just about any gravity system you think up. Good flow rates. Don't be afraid to flush occasionally. Great group backpack filter solution. Has worked well for family of four and I've used 10 days plus with group of six without issues.

This review was written in the old system and had content requirements that are different than reviews written today.