Does anyone know where I can find the Brett Favre Jets hat that has his name in place of the Jets name?

I was in Wisconsin a few months ago and when at some store, I dont remember which, I saw in the line of Packer hats a Brett Favre Jets hat. It looks like the standard jets logo, but instead of having the word "Jets" across the top of the "NY" it had either "Favre" or "Brett" across the top if the "NY" in the same color and font as the normal logo. I cant find it online because I am guessing it is probably not an NFL approved hat. Does anyone know where I can purchase this hat online?