[gorbypark]

I don’t have any sources to back this up, but I’ve heard that Gore Tex Pro is actually complete fabrics supplied by Gore. “Regular” Gore-Tex has the face and backing layers added by the manufacturer, where Gore Tex Pro comes with the face and backing layers. The Pro fabrics also require being sewn in a “Gore certified” factory. A lot of this is just rumours and hearsay picked up from living in a resort town, lots of discussions about Gore Tex!

[ethbr0]

The sampling for "regular" Gore-TEX (read: layers added by manufacturer) makes sense from a product standpoint.

If your selling point is waterproofness, and waterproofness can be destroyed by bad assembly... assembly is directly linked to your perceived product value.