If Rambo had an iPhone 4, he’d carry it in the Griffin Survivor. This badboy is tested and certified to meet or exceed US Dept. of Defense Standard 810F (which means it’s a bad ass case). It has a shatter-resistant polycarbonate frame, built-in screen protector, shock absorbing silicone, and is tested against rain, dust, grit, vibration, and shock. Cost: $49.99.