sweaters

Because I live in Florida and I am not as privy to these things as much as some of you are, I want to get an authentic (or as close as possible) Michigan hockey sweater.  What I see on M-Den are just described as jerseys, but they don't carry the distinctions of, say, the football jerseys that have different price points and levels of quality (Replica, Premier, and Authentic).

So, are the hockey sweaters sold by MDen considered Authentic?  If not, does anywhere in Ann Arbor sell Authentic hockey sweaters?