ElementCase is most known for their expensive aluminum iPhone 4 bumper cases in many different styles and finishes. This time, ElementCase is introducing their new Composite Line with two new cases for the iPhone 4 at a much more affordable price points with their new Formula 4 and Ion 4 cases. The Formula 4 case pictured to the left above is what ElementCase calls their most shock protective case which will run you $59.95, constructed out of ultra-high impact resistant polycarbonate material. The Formula 4 case has a slider style design and is a two-part case for easy docking with reinforced corners for a firmer grip as well as added protection. ElementCase's Formula 4 and Ion 4 both have a carbon fiber inlaid back plate. The Ion 4 will run you a bit less at $49.95, and it's made out of an ultra-high impact resistant TPU material with a non-slip ergonomic design. Both cases are compatible with the AT&T and Verison iPhone 4.