Marware has introduced its Sport Grip and Sportsuit Convertible cases for the iPhone 3G. The Sport Grip is made from non-slip silicone, and offers direct access to the iPhone’s screen, ports, and controls. The Marware Sport Grip for iPhone 3G will also include clear protective film and a microfiber cleaning cloth, and is now available for pre-order in a variety of colors for $20. The Sportsuit Convertible is described by the company as a 3-in-1…
