TrumCor Trombone Lyric Straight Mute

I know it says Lyric in the description, but truth be told, unless I need a clear, metallic straight mute sound in the orchestra, this is my mute of choice.  To me it's prettier-sounding, and as a bonus is very easy to play.

From TrumCor:

This mute was designed especially for the more lyrical passages found in symphonic, wind ensemble and solo literature. The muted sound created is warm and alive. Articulation is responsive and clear, even at the softest dynamic levels. This mute provides pure, undistorted intonation.