more scientific proof goretex can't work

The following information was taken from an article written by Phil Tomlinson. He published it on May 11, 2017 on his web site “mountainwagon.com”.

What Does Waterproof Breathable Mean?

"Waterproof Breathable"

Is that Waterproof AND Breathable or is it Waterproof OR Breathable?

Gore-Tex, Neo Shell, eVent and other waterproof membranes are funny things. For many people it's the layer they reach for anytime the weather isn't perfect. The thing is that those waterproof breathable membranes just don't seem to breathe very well when it's wet out and as far as I can tell, nothing does. The problem is physics

Waterproof breathable membranes and coatings work on the principle of diffusion. Diffusion needs a difference in humidity on each side of the membrane in order for your jacket to accomplish anything. The bigger the difference, the higher the rate of diffusion. When you are working hard, it's wet inside your jacket, so it's best at moving that sweat to outside your jacket when it's dry out.

Unfortunately even when it is bone dry the moisture will not get out. Bridgedale thinks that there will be diffusion allowing sweat out of their socks, they are just stupid people.

I worked in retail for years and in that time I could not count the number of people who brought in a brand new Gore-Tex jacket and told me it was defective because they got wet while wearing it in the rain. The jacket was waterproof - but because there wasn't enough of a difference in moisture on each side of the membrane, the diffusion required to keep that person dry from sweat just wasn't there.

If he could not count the number of returns was he the only employee of a retail store that had that experience, of course not. Unfortunately the retail store owner chose not to stop selling these types of jacket, so in my opinion they are culpable for perpetrating the continued lie associated with waterproof breathable jackets.

This information should be shared with ALL of the young people who are employed by rei, ll bean, moosestooth, dicks, cabelas-bass pro and every other marketing company in the world. They should know that they are part and parcel selling a lie, the largest lie to ever come out of the textile industry.

I wonder if the gore family takes pride in knowing they have successfully acquired significant profits and influenced many in the industry with a lie that has been copied because they had seen the profits; it is all about the money.

So all you young people who are idealistic and work in the outdoor industry think about the fact that when you show someone a jacket and tell them it is waterproof and breathable you have lied to them, not necessarily on purpose but because you have not learned that waterproof breathable materials DO NOT EXIST!!!