[Matt 'Maverick' Watts]

There are 2 different REAL versions of CADPAT:
1st Line CADPAT - This is the real deal with IR/FR treatments and is only to be used manufacturing for the Canadian Military
2nd Line CaDPAT - This is the real deal but with minor flaws and no Ir/FR treatments. This is used by Canadian government authorized manufacturers to manufacture gear out of.
Both 1st and 2nd Line materials are accounted for down to the square centimeter, so good luck getting any legally without authorization.
Anything else is a copy, ranging from really good to really crappy. :P

Now as far as Generations go, there are I believe 3 issue versions of the bdu's (I'm sure a current CF member can confirm) with trials currently underway for an updated version.

Material types are related to what it's being used for. Different grades of nylon are used for different applications throughout both uniform and load bearing equipment. Camouflage patterns will take on different sheens based on which material type it's dyed into.