Background with Wavy Black Lines. Abstract Background with Lines. Modern Decoration for Websites, Packaging, Posters, Banners, Furniture Design and Interior. Vector Square Pattern. Geometric Wave. Shutterstock .eps vector - Background with Wavy Black Lines. Abstract Background with Lines. Modern Decoration for Websites, Packaging, Posters, Banners, Furniture Design and Interior. Vector Square Pattern. Geometric Wave. - ID: 687469351