I only have good things to say about this. They dont irritate my throat, they taste good and I think they help lower my blood pressure. Im very happy with my purchase and plan to wear these when I travel in Italy this summer. ?? ?? Also, the app is not great. I?m not sure what bike it would work on. Its a loose fit, but fine for me. Granted Ive never used a $1000 mic for a live performance, but I wager the difference between this mic and a top-end mic is little enough as to not matter for the vast majority of players. On my third hardcourt pair, the lace keeper, which is instrumental for pulling on the booty, broke the second time I pulled them on. Final Uodate: Logitech still has not responded to any emails, trouble tickets or twitter.