Marware has launched three new iPod-based cases, the SportShell Convertible carrying solution for the iPod nano 5G and the EcoSleeve for the iPod nano 5G, alongside the MicroShell for iPod touch 2G. The SportShell for the Nano is an armband case, clip case and pocket case combination. It has a quick-release armband and the case can be switched from belt-clip to no belt clip. It is $35.