I suspect all the WPB fabric name changes we see by all of the respective OEMs is just that and the technologies have actually NOT undergone any meaningful developments that translate into dramatic practical improvements in vapour transfer comfort.
Normally, that is indeed the case, but here Gore made what might be a pretty significant change (for some): the development of an air-permeable membrane that was used in their ‘Pro’-range (and now the base for their Active with PBS).









