The MSR Trail Base Water Filter is the ultimate water filter kit. Flexible to fit your different water needs from day to day. It features modular components that allow it to be used as a gravity system at camp, a pocket-sized filter on the trail, or a fast-and-light reservoir when you need to carry clean water with you. The Trail Base Water Filter offers increased flexibility, making it truly adaptable to your adventures.
The Trail Base filter uses hollow fiber technology that quickly and reliably removes harmful protozoa, like Giardia and Cryptosporidium, and bacteria, like Salmonella.