The guy who polishes my cars has turned me on to these and I wanted to pass this along.
The come in a box with 6 dusters and 1 handle and are disposable, about half the size of a California Duster. They lift the dust right off the car without dragging it to the end of a countour or body panel. When its dirty you throw it in the trash.
I threw away 3 California dusters today!