High resolution 3D printed, beautiful surface, including the bottom part which displays a beautifully engraved oak sheet from solid wood. The cup part is adjustable according to the player imagination and the piece requirements. The geometry design of the main and the cup parts provide the cup mute sound, but  added wood color. Within the cup you can find a removable felt for the even more mellow, creamy sound.  It is lightweight and provides excellent intonation, articulation with a pure cup sound. Works great on Piston and German trumpets.