MSR Autoflow Microfilter

It's as simple as "Fill it. Hang it. Forget about it."

The AutoFlow Gravity Microfilter represents the latest evolution of backcountry hydration, combining water filtration, storage and collection into a single, lightweight system. With the latest Hollow Fiber technology and the power of gravity, the AutoFlow is fast too—up to 1.75 liters per minute without a single pump stoke. 4-liter reservoirs allow you to filter large quantities at once making it perfect for groups, while quick and easy tool-free cleanings maintain high flow rates on extended expeditions.

• No Pumping: Let's gravity do the work so you don't have to.
• Fast: Filters more than 1.75 liters per minute.
• Lightweight: Weighs only 10.5 oz. (299 g).
• Field-Maintainable: Can be cleaned repeatedly without disassembly for flow recovery.
• Adaptable: Connects to most any bottle or reservoir with included Universal Bottle Adapter.