If that DWR coating wears off, the external fabric gets soaked, effectively blocking the membrane’s pores so your sweat accumulates inside the jacket. Instead, it’s bonded onto an external-facing fabric coated with DWR or between two fabrics in so-called three-layer jackets in order to protect the Gore-tex and keep its pores open so they can vent water vapor, i.e. Most people don’t realize that the external fabric on their jackets isn’t made with Gore-tex. OutDry is Columbia’s new waterproof/breathable fabric that’s arguably better than rain jackets made using Gore-tex and other proprietary membranes that require an exterior DWR (Durable Water Resistant) chemical coating to make rain bead up and roll off of the exterior of your coat. Then I provide a review of the OutDry Ex ECO Rain Jacket, one of many Columbia jackets that uses the OutDry waterproof/breathable layer. First I explain how OutDry is different from Gore-tex. However, I’m less impressed by the OutDry Ex ECO Rain Jacket for use as a hiking jacket and think it makes for a better casual jacket around town than for serious day hiking or backpacking. The Columbia OutDry Ex ECO Rain Jacket is made with a new waterproof/breathable fabric called OutDry that beats the pants off of Gore-Tex.
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