I have the tune belt for the original ipod shuffle, and my husband has the one for the ipod nano g4. We both love them. The only reason I give it 4 instead of 5 is because it may not fit all people and only extends out to like 15 inches. We both use them for running and they do not slip or slide at all even when we are covered in sweat. You just take your ipod out and throw it in the wash and wa-la fresh and clean. It is made of wet suit type material and is quite comfortable. The plastic window is easy for me to change songs with, my husband does say that on his it is a little more difficult to turn the wheel for volume etc. This is a good product and worth the money.

I have a one of these and I use it with the Nano.  I go to lots of baseball games in the summer, and this is so handy.  Put the Nano in the holder, plug in the ear buds, and you are all set.  You don't have to worry about dropping the machine.