If you tend to be tough on your iPhone then maybe you need the military-grade Tank case from Case-mate. Modeled after motorcycle helmet engineering, Tank is designed with a hard, shatter resistant, polycarbonate hard shell and a shock absorbing interior. There is even a retractable screen which shields from impacts, cracking and condensation, fully protecting the iPhone screen. (It also means you can’t use the phone though.)
Case-mate says the Tank meets or exceeds US military standards. Good to know.
Fits all iPhone 4 / iPhone 4S devices (AT&T, Verizon, Sprint and International) $60 in a varitey of color combos.