![]() ![]() But a major advantage of PU-based membranes over most ePTFE-based rivals – like Gore-Tex – is that it’s much easier to make them stretchy. There, they can then evaporate away.Ĭolumbia call this keeping you dry ‘from the inside out’: hence, Ampli-Dry. Since PU is hydrophilic (water-loving), individual water vapour molecules chemically bond to the surface and are drawn through it, passing directly through the membrane to the opposite side. The membrane allows moisture vapour to pass through it thanks to some clever chemistry. ![]() Technology that keeps you dry ‘from the inside out’. In essence, it’s an extremely thin PU (polyurethane) membrane laminated to a tough face fabric to provide the wearer with waterproof and breathable protection. But three decades on, Omni-Tech remains a core staple of the product range. Today, Columbia Sportswear holds more than 200 patents for its remarkable range of in-house innovations. A flurry of new innovations followed, not least the brand’s game-changing Omni-Heat tech, as well as TurboDown insulation and the genuinely unique OutDry Extreme range of apparel. That philosophy reached its logical evolution in 2007, when Columbia established its own Performance Innovation Team, known as the PIT lab. In fact, Omni-Tech was Columbia’s first patented in-house technology, a progressive step that marked a sea change in the brand’s approach: to take innovation seriously, rather than relying on ingredient brands like Gore-Tex. Columbia’s Omni-Tech Ampli-Dry Shell, featuring brand new technology developed by the U.S. ![]()
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