These shoes have been lifesavers during my pregnancy! Moving the phone around a little causes it to go away. Soft rubber sole versions of these slippers are floppy and catch on carpet, tripping you up so buy these instead! I assembled the base first not tightening any bolts initially to allow the flexibility needed to align the parts properly. I was a little daunted when I opened the box because there are several instructions to follow. I would suggest people to find a way to try it before buying it, or even give it a try even if you don?t find a way to actually try it because the sound quality is really great! Thanks, fantastic plot. I gave it 2 stars because the overall design is good - they are just really cheap - no structure. This is well constructed and the right size for my shoes. They hold the tone quite well and so far I have NOT heard any distortion, even at higher volumes or full orchestra music.