It fills my tiny apartment perfectly with sound while also not annoying my neighbors. The fit is pretty good--perhaps a little wide in the heel. It kept what I think is the same sound quality up until one side just wouldnt go on any longer. Sinceramente non mi aspettavo di essere così piccola, ma mio figlio e rimasto veramente colpito di quanto e bella. It was a very fast delivery, but did not send any packing to return my device when they said it would either be attached in the email or sent with the package. They have never fallen out with the silicone piece. I put my garmin gps on a topeak bar extender that the e-bike controller display is on to be able to use a very short usb cable to power the gps. 5mm splitter if you want to use the mic on pc. If you dont need regular access to that button, this is a great case. I got them cheap so I kept them and gave them to my brother who has smaller feet.