I just received the Adidas program information in the mail yesterday. It appears as if AFAA has some affiliation with the program, because I was identified as an AFAA certified "professional." I also receive instructor program info from Nike, H20Wear, Speedo and Avia. I've had a lot of success with Avia and H2OWear. The Speedo gear isn't priced well, and chlorinated water just destroys the suits. The Nike gear is good, and I've ordered from them. Adidas pants don't fit me well, so I probably won't order any unless I've tried them on first.
I imagine that if you're interested in any of the above programs, there's info available from their websites. Look for "Fitness Professional" or "Instructor Info" or something like that.
Best of luck,