- App and initial set up was very easy- Actually shows phone notifications vs other cheaper models where they do not. I waited to give this review. If you dont mind the way this sole looks, buy these. Without the insoles these boots would have been useless to me. I have not heard any background hiss on any music except for old recordings which has background hiss whatever headphones I play it through. I love my old iPod Classic, but I was unable to use it with my Bluetooth headphones or speaker. The manufacturer needs to read these reviews and change the way this slipper is made. I would have liked this shoe! There are three different sizes, arbitrarily placed, just suitable for my home, there are children, there are adult shoes, convenient for me to store, you can clearly see where the shoes are, not messy! Try to angle them as far out as possible while maintaining balance.