a folder made from a roll of folder material stock . the folder has a front flap having a first top edge and a first width , and a rear flap connected to said front flap by a folder bottom , the rear flap having a second top edge and a second width . a slip - resistant portion is disposed on at least one of the flaps near said first or second top edge . the folder material stock comprises paper and a polymer material . a method of making the folder includes the steps of providing folder material stock comprising polymeric material , providing embossing dies in spaced , operable , mating relationship , positioning the folder material stock appropriately in the embossing dies , applying force to at least one of the embossing dies so as to decrease the spaced relationship , and deforming the folder material stock .