Their description:
Product Description
Snap on a CaseCrown iPhone 3G 3GS Polycarbonate Case for optimal protection and style. This case’s ergonomic design cover is comfortable and form-fitting, providing protection against scratches and damage. The case also allows full, easy access to all iPhone features - Screen display, dock connector, headphone port, microphone, and camera lens while still being protected in the case…. More >>
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CaseCrown iPhone 3G 3GS Soft Polycarbonate Slim-Fit Case

I love the look and feel of this case but it is not working with the screen protectors I bought at AT&T. I get air bubbles that keep getting bigger. I tried trimming the protector and get the same effect.