St. Louis Rams #39 Steven Jackson Alternate Jersey. Support your favorite team with this Jerseys by reebok. This St. Louis Rams v-neck jersey is made of durable, quick-drying nylon diamond back mesh and designed with the team name and player's number screen-printed on the chest. The player's name is screen-printed at the upper back on a sewn down nameplate, with his number screen-printed in the center.