Warburton P.E.T.E. Pro silver plated

This tool should not replace your normal practice, where you can judge the essentials of tone, attack, dynamics etc. I can definitely get the muscle burn in the embouchure that I'd normally associate with a heavy playing session, but it hasn't transformed my playing and as such I haven't personally been able to find a useful way to incorporate it into my daily routine. I can see it would be a useful tool for giving a clear visualisation of what the embouchure does or should look like during playing, or for focussing a "lazy" embouchure, but be sure to follow the instructions and online video tips rather than expecting it to replace proper practice.