Marware has announced five new cases for the iPhone 4S: the Membrane (pictured), the DoubleTake, the DoubleTake Nocturnal, the Eclipse and the C.E.O. Prestige.

These cases will come in a variety of colors and are now available for pre-order at the Marware web site ( Prices are: the Membrane ($14.99), the DoubleTake ($24.99), the DoubleTake Nocturnal ($29.99), the Eclipse ($24.99) and the C.E.O. Prestige ($29.99).