Fly Your Tent Down the Freeway

Jul 3, 2023

The original Mountain Safety Research Newsletter (1969-1982), written by MSR founder Larry Penberthy, is a fascinating read. The newsletters are filled with extensive and technical product testing and mountain safety information. However, Larry and his team were also known to have some fun. One of our favorite features in this vast newsletter archive is the makeshift “wind tunnel” testing report in Issue 7 (April 1973) for the new MSR Mountain Tent. Important performance features of the tent are profiled under the headings “More Room,” “Condensation,” “Doors,” “Ease of Erection,” “Wind Stability,” “Cookholes,” “Materials” and “Weight.” Within the “Wind Stability” description, the reader is given this glimpse into MSR’s rigorous and fun DIY testing methods. Larry was never satisfied until he personally put gear through the ultimate paces. The original color…

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MSR HyperFlow™ Microfilter: Behind the Gear

Apr 21, 2014

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….

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