All Little League uniforms must have a patch either sewn on or ironed on to the sleeve or breast area on the uniform. The rule book designates that the patch is to be worn on the upper left sleeve of the uniform, unless the team is wearing the vest-style uniforms. For shirts with a raglan sleeve, the proper spot is three inches below the seam of the shirt at the shoulder. For shirts with set-in sleeves, it must be one inch below the shoulder seam. For teams that are wearing the vests over a shirt, the patch may be placed over the left breast of the vest.
There is not a single patch that is worn by all Little League Baseball players, so it is also important that teams wear the appropriate patch for their division. All players age 12 and under wear the Little League Baseball patch, while players in the 13 and 14-year old age bracket must have a patch for Junior League. Players age 15 and 16 must wear a Senior League patch and the 17 and 18-year-olds are required to wear the patch denoting their status as Big League players.
Official Little League patches are available only through Little League Baseball. The Little League store offers both iron-on and sew-on versions of the different patches. Umpires who are working Little League tournament games must also wear patches that can be purchased through the online store. While not required, the Little League store also offers a couple of special patches.