A post pressurizing material is preferably embodied in a layered system of gridwork in the form at least two back-to-back screens which can be attached to the rear surface of a body with a peripheral border around the screens. The screens have the ability to entrap fluid flow and accumulate pressure therein so that, in applied form, it will reduce drag and simultaneously push or propel the body to which rear surface it is attached into the fluid.

 
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