Choose a frame that is stained or painted a color that matches your jersey, and the décor in your home. Look for a shadow box with UV-protective glass. There are certain frames made specifically for jerseys, but they tend to be very expensive. A shadow box with the right dimensions will most likely be much cheaper than a frame made especially for a jersey.
A lot of framers choose to use dry mounting to prepare the backing for the frame. This safely attaches the archival paper to the backboard. The backing paper should be a neutral color that complements your jersey.