Sync connector opening is a bit iffy,
September 8, 2010 B. Scott McIntyre (Naugatuck, CT USA) - See all my reviews
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This review is from: Marware Sport Grip Silicone Case for iPod nano 5G (Clear) (Electronics)
I bought this to use while running with a Nike+ transmitter. My complaint is that the sync connector opening on this is just a slit, that bulges open when you hook up the cable. As a result, when using something like the Nike+ that stays connected, the case stays distorted out around it. It's not really very well done. I would have much preferred to have an opening that was the actual size of the connector, and I ended up taking a razor blade to this to make it work better.
The previous Marware nano case I had, for the 3G version, worked much better.