I got one of these for my brother for christmas - if you clip it on to just about anything, it's not going anwhere. It weighs nothing and I have a feeling that even if you ran into something and knocked it off, it would probably stay connected to the headphones (and your head). If you go to the store and take a look at them, you'll see what I mean.Yea it is pretty cool. Anyone know if the clip is actually strong enough to hold on to your clothes while running/lifting weights?