breathability
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By the Numbers: The New Breathability Gap in WPB Jackets and What the Breathability Tests Get Wrong
Testing 21 current waterproof-breathable jackets and fabrics reveals a widening performance gap between membrane types. Stephen Seeber compares new measurements with earlier results, explains how humidity and temperature influence moisture transport, and examines why common breathability tests can overstate hydrophilic membrane performance under the conditions backpackers encounter on the trail.
By the Numbers: The Myth of Air Permeability in Windshirts
If one of your objectives in selecting a windshirt is eliminating moisture vapor, your selection should rely more heavily on Moisture Vapor Transmission Rate (MVTR) than Air Permeability Measurements (APM / CFM).
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Analog by Design: The Vaer C4 Tactical Field SolarThe best gear works the moment you reach for it. The VAER C4 Tactical Field Solar (41.5mm) combines rugged functionality with everyday practicality, featuring a matte dial with bold stencil numerals, raised 3D Super-LumiNova markers, and a 12-hour bezel for timing a climb or tracking a second time zone. Powered by light, it delivers up to six months of operation from just six hours of exposure, with no routine battery changes required. A sapphire crystal, 200 meters of water resistance, USA assembly, and a two-year waterproof warranty make it a dependable companion for adventures on and off the trail.
