very goid mute, really. It is very sturdy, has a good robber around it so you wont scratch the horn, its sound and feeling when playing is really very good and very quiet. A little minor is that the mute wont fit the bell for transport and storage, and also the colour of the mute doesnt stay on so good; bud none the less i really love thus mute, and cant practise or play at night without it.