Why am I telling you this? Because this soap is not going to foam up like other body washes do. Yuwiss sends interchangeable batteries that slide into the audio receiver really easily and extend your use of it by 100%The charger port is well closed off on the bottom by a soft rubber tab. The heel height is perfect to add a little dress-up appeal to any outfit and the color goes with basically EVERYTHING. Play/Pause, track forward / back, fast-forward and rewind work fine with OS X and iThings. Ive tried silicone and all sorts of headphones and they kept falling over. You get 5 stars on this product. The soundstage and separation are good, the clarity is good, mids are full and forward but balanced, treble is clear but not peircing or sibilant, and with the volume turned up, the bass really rumbles without getting muddy. I have bought several of them throughout the years! It did leave little black flakes of the lining after the first use and still does, not sure if all brands do that which is a little nuisance, but honestly I don?t really care, hopefully it lasts, I mainly just wanted the results and to work up a sweat! This has become my all time favorite .