iPod skins with built-in backup battery

A new line of iLuv silicone cases for the iPod with video that offer built-in backup batteries. The manufacturer, easyishop, claims that the battery provides a charge that almost doubles the iPod's standard life, to about 42 hours. The silicone skin is also designed so that it does not have to be removed in order to synchronize with a computer, and allows access to the Click Wheel and Hold switch.There is an included USB charger. The skin is available in black and white and is priced at £45 or about $90.