I just saw this type of membrain wich is not made with pore like Gore-Tex. It may be 60 to 75% of the breathability of the gore-tex but the pore cannot be obstruct by dirt so It won't lose efficacity.
It's a pretty cheap fabric (for Waterproof-Breathable fabric)and because it has no pore to obstruct with dirt, making a bivy-bag and a alpine climbing jacket out of it would be a great idea I tough.
Any experience or comment?
Thank you all.
Ah also, I haven't found any information or official website (apart from fabric outfitter website)or any commercial gear made of it... Any reason?