MirTra Small Embouchure Training Device Mirror For All Brass Instruments Adapted Trumpet,Trombone,French Horn,Euphonium,Baritone Horn,Tuba,Pocket Trumpet,Bugle,Cornet, Flugelhorn,Mellophone etc

I use this mirror as part of my practice as a trumpet player. I tried a similar product made by the Joral company. I think this product is far superior. It's far easier to attach and remove from the instrument. It's lighter weight makes it less likely to damage your incident in an accident. The mirror is clear and can be attached at different positions in order to better observe one's embouchure while playing.

I never take it off my horn. I can easily readjust my lips even while playing.