Sailing Rain Gear
Breathable: Scientific studies show the Propore material that this
jacket is made out of is much more breathable than Gore-Tex, especially
when there is minimal water vapor, so you don't have to wait until a lot
of water vapor builds up inside the jacket for it to start breathing.
Based on my own experience, I guess it breathes OK, but it's hard to
really say. The jacket is windproof, so your body heat gets trapped
inside the jacket, so you'll feel hotter with the jacket on even if your
sweat is able to get out. Waterproof: I've only been rained on once with it, but it seemed to do
the job. I read a detailed review where the reviewer said he shaped
part of the jacket like a cup, filled it with water, and left it sit for
24 hours with no leaking (he claimed that Gore-Tex is not as
waterproof). I tried a similar experiment. I turned the stuff sack
inside out (made of the same material as the jacket), filled it with
water, and hung it by the drawstring. A few hours later, there were a
few drops forming on the surface in a few spots. When I emptied it and
turned it right-side-out, the areas that had leaked seemed to have water
sticking to them, unlike the rest of the surface where the water rolled
right off. Perhaps the leaky areas had small abrasions from being
carried around in my pack. Anyway, I wouldn't consider the tiny amount
of leakage significant considering that water pressure was applied for
hours.
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