Quote:
Originally Posted by 3lbgrayling
Of course it does Bert.but the goretex membrain cannot breath when it is underwater.
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Not sure that is factually correct Jim.
All breathable membranes are rated for water pressure on the outside before they give up, up and till that point is reached, they are still capable of performing the breathable function. hence the wet bum if worn whilst seated in a boat!
for instance, in a downpour, when jacket is getting pelters, and surface is soaked, it still breathes.
not sure at which point breathabillity stops, might be half the outside pressure, may be more, but the very nature of their performance is that they can expire smaller droplets outways, than the external droplets inways!
regards
bert