Pumping three liters per minute, the MSR HyperFlow Microfilter provides fast and dependable water purification—all the while weighing in just over seven ounces. That means you can pack quick-filtering power without sacrificing weight or space on your fast-pace backpacking trips. The Hyperflow Microfilter's float end stays face-down in the lake or stream and won't clog up as you pump, and an included Quick Connect Bottle Adapter connects to MSR, Nalgene, and other bottles with 63mm threaded openings. And, more importantly, no tools are needed to disassemble the Hyperflow Microfileter for on-the-go cleaning.