Can say if Noise cancellation feature is doing anything. My closet is full of them every color, summer slides and winter covered shoes. Feel bad. Why have sidetone? Have you ever heard someone try to have a conversation with you while they are listening to music on a pair of headphones? They talk obnoxiously loud, trying to hear themselves over their own music--music that nobody else can hear. They included everything needed to mount them (aside from typical tools), including two types of drywall anchors and the Allen wrench for the set screw. The sandals themselves still feel "hard" as if my feet never made an indention. 5?8? tall and the bottom hem brushes a scant 3? above my ankle. I get that these buds are $$$ for a few reasons: Totally wireless, fitness tracking app, buds detect heart rate. I went and bought a second pair to save for later since Im guessing it will be harder to find a replacement in the future due to models keep changing. WOULD DEFINITELY RECOMMEND.