From what I know, bone conduction is silent until you put it on. For the ones, which were, they were way overpriced. I purchased these for my husband who has flat feet and he says they are too hard walking around in. Its great for what i needed, shoe size were 9 and they fit good and they look great inside . Feels: the sole is comfortable and the shoe makes your feet feel “firm”. Installation instructions were very clear. The grips are ergonomic and it doesnt feel akward to handle. Good enough to make calls but not really something you should use to record on. By the time it came, I felt relief rather than pleasure, Im afraid, which is a shame. Was nervous about new design for these keen kid shoes but they are great and my 8 year old loves them!