Marware ( is shipping the US$34.99 Eco-Runner
for the iPod nano 4G. It’s an environmentally friendly iPod carrying
solution that replaces neoprene with a special eco-friendly material.
Also, the wrist/armband case is designed to accommodate the new 4G
nano and the Nike+ Sport Kit receiver.

The armband extension strap allows this case to be worn either on
your wrist or your upper arm. It’s available in gray with green