The original straight mute in walnut wood that gives a very warm sound with no edginess.  It responds very well, is very even with regard to sound quality from note to note, and is capable of playing the loudest of the three, yet very easy to play softly.  This mute plays astonishingly freely.  Playability is most similar to that of your open horn.  The most unobtrusive  mute we have ever witnessed! This mute comes with a leather strap.