The Cell Helmet(iPhone 4 and 4S; $45) is a case that comes with one year's worth of coverage against incidental damage, during which the company claims that it will fix or replace a broken phone in exchange for a $50 handling fee. The case itself, which comes in black with a variety of interchangeable colored back plates, is made of dense, polyurethane rubber and features angled edges to deflect the force of impacts away from the iPhone's weak spots.
Via [Macworld]