What is a jersey display case?

A jersey display case is almost looks like a large picture frame that hangs on your wall, except it has a glass door that you can open to hang your favorite sports jersey up in there. That way it will stay safe and be up on display for everyone to see. Here is an example of one with some more information about it, Amazon.com/Basketball-Jersey-Display-Cabinet-Protection/dp/B001ADKKNI">http://www.Amazon.com/Basketball-Jersey-Display-Cabinet-Protection/dp/B001ADKKNI