Aluminum Case Cover for 30GB Microsoft Zune with Screen Protector & Belt Clip - 8 Color Variations!, Black New Aluminum Hard Metal Case for your Microsoft Zune 30 GB. Protects your Zune from everyday wear and tear. Foam inner lining holds your Zune securely in place and cushions it from impact. Secure catch closure prevents accidental opening. Complete access to all buttons, ports and functions.