Abstract: A fender cover includes a generally planar sheet of resilient, flexible, pliant, water-impervious material with a plurality of pockets formed along one edge. The pockets are filled with a high density deformable flowable material such as sand, and are separated by flat valleys, to permit folding of the sheet between the pockets. A first ridge is formed in the sheet proximal the pockets in extending between the side edges, and projecting upwardly from the sheet. A second ridge is formed parallel and rearwardly of the first ridge and also extends from side edge to side edge. Both ridges are preferably formed of loops of the material, gathered together and affixed in a loop. Each ridge forms a hinge-type joint permitting pivotal movement of the pockets to a position generally perpendicular to the sheet at a location rearward of the ridge.