Marware has introduced its new Sportsuit Convertible cases for the fourth-generation iPod nano and second-generation iPod touch, along with another Sport Grip case for the nano 4G. Made from Lycra and Orka-skin material, the new Sportsuit Convertible 3-in-1 case leverages Marware’s Multidapt system to function as an armband, belt clip case, or low profile sleeve. It features a clear vinyl protector for the iPod nano’s Click Wheel and screen…