To start with the hole for the headphone jack is on the wrong side for a 5th gen Nano. Control of the operating wheel through the plastic window is very intermittent and makes operating it on the move (or even at a standstill), very fiddly ..... not good when you need to turn it down or off quickly when you're out jogging on the roads. The item is pretty well made and if control of the Ipod on the move is not a concern to you it might be useful, but there are better and cheaper products out there.
However no complaints about the company that sent it out, very quick delivery, no quibble about sending it back and prompt refund.