I have a fairly good idea about the differences between 1050d ballistic nylon (the good stuff), 1680d ballistic (the lesser stuff) and 1000d Cordura nylon. However, I am not sure how 2520d is made and what its qualities are. I know Briggs and Riley as well as Delsey use it, and many other companies, too.

I googled and couldn't find anything but bag adverts. Very boring! Does anyone know?

Till