Fanzz is a sports apparel and team gear retailer based in Salt Lake City Utah. Fanzz began operations in 1985 and has grown to be one of the largest sports apparel and merchandise providers in the United States.Fanzz is a sports apparel and team gear retailer based in Salt Lake City Utah. Fanzz began operations in 1985 and has grown to be one of the largest sports apparel and merchandise providers in the United States.