I can move freely and they stay in my ear quite well. After I stuck the first disc to the wall, I put the suction on that one and so it was easy to line up the other disc at the right length. There are so many cute Crocs out there now & this is definitely one worth buying! We?ve loved the vacuum, but the cord is crazy short. Not what it was designed for but let me tell you that " automatic " brake made this a one man job. For some users the height difference may also make the difference whether or not the receiver will fit where you would like to put it. It does not, for instance, hold canned vegetables because the shelf is not big enough. Im a bit torn on what to rate these. This had more hanging space that was needed and took up less space in the room. I ran them off a Yamaha AV receiver that had a decent headphone output and it really brought down the highs to acceptable levels.