16.5x16.5@ 300 dpi. This versatile background comes with 7 layers. The layered file structure allows you to change the color and get the most flexibility out of this background. Simply adjust the color to anything you like using color overlay in layer styles and you are all set. You can move the lightning and powder layers to any area in your image and you can add your own brushstrokes for further customization if you would like. The perfect companion to the lightning clipping masks and brushes and the powder brushes. Using these three tools you will be able to create memorable images in minutes.