Ken Norton Jr. San Francisco 49ers Throwback Jersey. This item features player name and numbers professionally sewn and stitched on. Football throwback jerseys featuring your favorite players, stars or hall of famers on a high quality custom jersey. Throwback football jerseys of most players are hard to find and extremely popular. All of these retro and throwback style custom jerseys are available in sizes ranging from 32" chest for kids all the way up to 68" chest for big men. If you would like any of our jerseys with a different name or number than what we offer, let us know, we can do any player, name and number or any jersey we offer.