I want to buy a case from Tech 21, not sure to get the impact band or impact shell yet. However, there is the issue that I use my iPhone with Glas.tR so I don't know whether it will work with the above cases or not. Can someone please confirm it for me? Thanks 
Impact Band: http://37.188.126.149/index.php/Product/impact_band_iphone_5_smokey
Impact Shell: http://37.188.126.149/index.php/Product/impact_shell_iphone_5_smokey
Impact Band: http://37.188.126.149/index.php/Product/impact_band_iphone_5_smokey
Impact Shell: http://37.188.126.149/index.php/Product/impact_shell_iphone_5_smokey