MSR Category Director Chris Barchet answers a few questions about the design and performance of the MSR HyperFlow microfilter. Who was the HyperFlow microfilter engineered for and why? Today’s outdoor adventurers are going faster and farther. They need solutions that increase their speed and efficiency in the mountains. So the design goals of the HyperFlow were very simple: It needed to be light and it needed to be fast. Most pump filters weigh about a pound and produce around 1 liter of water per minute. The HyperFlow comes in under 8 ounces and delivers 3 liters of clean water per minute. It’s the lightest and fastest pump available. We engineered it for anyone who needs a reliable supply of clean water on adventures where weight or speed is a priority….