**Feature** The Baseball Sound Wallet plays a series of classic baseball sounds each time you open it. Includes a silencer to keep it quiet if desired. Celebrates America's two favorite pasttimes -- Baseball & Spending Money Made of durable Tyvek® Its our incredible sonic wallet! When the bases are loaded and so are you. Plays classic sounds of a ball game each time you open it. Includes a silencer to keep it quiet if desired. Made of durable Tyvek?.