Redesigned for the iPhone 3G from the same-named sports armband for iPhone, Marware's new Sportsuit Convertible comes with four pieces: a neoprene, plastic, and mesh iPhone 3G case, a Multidapt belt clip, an armband, and a detachable key pouch. You can use the case separately for pocketable iPhone 3G protection, attach the belt clip to wear it at waist level, or attach the armband with or without the key pouch to wear it on your biceps during runs…