Polyester jersey with twill stitched name and numbers.`Mean' Joe Greene was the catalyst of the Pittsburgh Steelers `Steel Curtain' defense during their four Super Bowl titles during the 1970's. The two time defensive player of the year used speed and strength to dominate the opposition's offensive strategy. During Super Bowl X against the Dallas Cowboys, the Steelers wore a patch to commemorate the Bicentennial of our country. The Steelers won the contest for their second consecutive title.